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1.
ACS Biomater Sci Eng ; 10(5): 3412-3424, 2024 May 13.
Article in English | MEDLINE | ID: mdl-38613483

ABSTRACT

Intratumoral injection of anticancer agents has limited efficacy and is not routinely used for most cancers. In this study, we aimed to improve the efficacy of intratumoral chemotherapy using a novel approach comprising peri-tumoral injection of sustained-release liposomal nanoparticles containing phenylephrine, which is a potent vasoconstrictor. Using a preclinical model of melanoma, we have previously shown that systemically administered (intravenous) phenylephrine could transiently shunt blood flow to the tumor at the time of drug delivery, which in turn improved antitumor responses. This approach was called dynamic control of tumor-associated vessels. Herein, we used liposomal phenylephrine nanoparticles as a "local" dynamic control strategy for the B16 melanoma. Local dynamic control was shown to increase the retention and exposure time of tumors to intratumorally injected chemotherapy (melphalan). C57BL/6 mice bearing B16 tumors were treated with intratumoral melphalan and peri-tumoral injection of sustained-release liposomal phenylephrine nanoparticles (i.e., the local dynamic control protocol). These mice had statistically significantly improved antitumor responses compared to melphalan alone (p = 0.0011), whereby 58.3% obtained long-term complete clinical response. Our novel approach of local dynamic control demonstrated significantly enhanced antitumor efficacy and is the subject of future clinical trials being designed by our group.


Subject(s)
Liposomes , Melanoma, Experimental , Mice, Inbred C57BL , Nanoparticles , Phenylephrine , Animals , Phenylephrine/pharmacology , Phenylephrine/administration & dosage , Nanoparticles/chemistry , Melanoma, Experimental/drug therapy , Melanoma, Experimental/pathology , Mice , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/pharmacology , Antineoplastic Agents/therapeutic use , Antineoplastic Agents/pharmacokinetics , Melphalan/therapeutic use , Melphalan/administration & dosage , Melphalan/pharmacology , Cell Line, Tumor , Melanoma/drug therapy , Melanoma/pathology
2.
Pediatr Blood Cancer ; 71(6): e30976, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38577760

ABSTRACT

PURPOSE: Survival rates of patients with high-risk neuroblastoma are unacceptable. A time-intensified treatment strategy with delayed local treatment to control systemic diseases has been developed in Japan. We conducted a nationwide, prospective, single-arm clinical trial with delayed local treatment. This study evaluated the safety and efficacy of delayed surgery to increase treatment intensity. PATIENTS AND METHODS: Seventy-five patients with high-risk neuroblastoma were enrolled in this study between May 2011 and September 2015. Delayed local treatment consisted of five courses of induction chemotherapy (cisplatin, pirarubicin, vincristine, and cyclophosphamide) and myeloablative high-dose chemotherapy (melphalan, etoposide, and carboplatin), followed by local tumor extirpation with surgery and irradiation. The primary endpoint was progression-free survival (PFS). The secondary endpoints were overall survival (OS), response rate, adverse events, and surgical complications. RESULTS: Seventy-five patients were enrolled, and 64 were evaluable (stage 3, n = 8; stage 4, n = 56). The estimated 3-year PFS and OS rates (95% confidence interval [CI]) were 44.4% [31.8%-56.3%] and 80.7% [68.5%-88.5%], resspectively. The response rate of INRC after completion of the treatment protocol was 66% (42/64; 95% CI: 53%-77%; 23 CR [complete response], 10 VGPR [very good partial response], and nine PR [partial response]). None of the patients died during the protocol treatment or within 30 days of completion. Grade 4 adverse effects, excluding hematological adverse effects, occurred in 48% of patients [31/64; 95% CI: 36%-61%]. Major Surgical complications were observed in 25% of patients [13/51; 95% CI: 14%-40%]. CONCLUSION: This study indicates that delayed local treatment is feasible and shows promising efficacy, suggesting that this treatment should be considered further in a comparative study of high-risk neuroblastoma.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols , Doxorubicin/analogs & derivatives , Neuroblastoma , Humans , Neuroblastoma/drug therapy , Neuroblastoma/therapy , Neuroblastoma/mortality , Neuroblastoma/pathology , Female , Male , Child, Preschool , Infant , Child , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Japan/epidemiology , Prospective Studies , Survival Rate , Adolescent , Induction Chemotherapy , Etoposide/administration & dosage , Follow-Up Studies , Vincristine/administration & dosage , Vincristine/therapeutic use , Combined Modality Therapy , Cyclophosphamide/administration & dosage , Cyclophosphamide/therapeutic use , Prognosis , Doxorubicin/administration & dosage , Doxorubicin/therapeutic use , Melphalan/administration & dosage , Melphalan/therapeutic use , Cisplatin/administration & dosage , Cisplatin/therapeutic use
4.
Lancet Haematol ; 11(5): e358-e367, 2024 May.
Article in English | MEDLINE | ID: mdl-38555923

ABSTRACT

BACKGROUND: Chimeric antigen receptor (CAR) T cells targeting CD30 are safe and have promising activity when preceded by lymphodepleting chemotherapy. We aimed to determine the safety of anti-CD30 CAR T cells as consolidation after autologous haematopoietic stem-cell transplantation (HSCT) in patients with CD30+ lymphoma at high risk of relapse. METHODS: This phase 1 dose-escalation study was performed at two sites in the USA. Patients aged 3 years and older, with classical Hodgkin lymphoma or non-Hodgkin lymphoma with CD30+ disease documented by immunohistochemistry, and a Karnofsky performance score of more than 60% planned for autologous HSCT were eligible if they were considered high risk for relapse as defined by primary refractory disease or relapse within 12 months of initial therapy or extranodal involvement at the start of pre-transplantation salvage therapy. Patients received a single infusion of CAR T cells (2 × 107 CAR T cells per m2, 1 × 108 CAR T cells per m2, or 2 × 108 CAR T cells per m2) as consolidation after trilineage haematopoietic engraftment (defined as absolute neutrophil count ≥500 cells per µL for 3 days, platelet count ≥25 × 109 platelets per L without transfusion for 5 days, and haemoglobin ≥8 g/dL without transfusion for 5 days) following carmustine, etoposide, cytarabine, and melphalan (BEAM) and HSCT. The primary endpoint was the determination of the maximum tolerated dose, which was based on the rate of dose-limiting toxicity in patients who received CAR T-cell infusion. This study is registered with ClinicalTrials.gov (NCT02663297) and enrolment is complete. FINDINGS: Between June 7, 2016, and Nov 30, 2020, 21 patients were enrolled and 18 patients (11 with Hodgkin lymphoma, six with T-cell lymphoma, one with grey zone lymphoma) were infused with anti-CD30 CAR T cells at a median of 22 days (range 16-44) after autologous HSCT. There were no dose-limiting toxicities observed, so the highest dose tested, 2 × 108 CAR T cells per m2, was determined to be the maximum tolerated dose. One patient had grade 1 cytokine release syndrome. The most common grade 3-4 adverse events were lymphopenia (two [11%] of 18) and leukopenia (two [11%] of 18). There were no treatment-related deaths. Two patients developed secondary malignancies approximately 2 years and 2·5 years following treatment (one stage 4 non-small cell lung cancer and one testicular cancer), but these were judged unrelated to treatment. At a median follow-up of 48·2 months (IQR 27·5-60·7) post-infusion, the median progression-free survival for all treated patients (n=18) was 32·3 months (95% CI 4·6 months to not estimable) and the median progression-free survival for treated patients with Hodgkin lymphoma (n=11) has not been reached. The median overall survival for all treated patients has not been reached. INTERPRETATION: Anti-CD30 CAR T-cell infusion as consolidation after BEAM and autologous HSCT is safe, with low rates of toxicity and encouraging preliminary activity in patients with Hodgkin lymphoma at high risk of relapse, highlighting the need for larger studies to confirm these findings. FUNDING: National Heart Lung and Blood Institute, University Cancer Research Fund at the Lineberger Comprehensive Cancer Center.


Subject(s)
Hematopoietic Stem Cell Transplantation , Immunotherapy, Adoptive , Ki-1 Antigen , Transplantation, Autologous , Humans , Hematopoietic Stem Cell Transplantation/methods , Hematopoietic Stem Cell Transplantation/adverse effects , Male , Female , Middle Aged , Adult , Immunotherapy, Adoptive/methods , Immunotherapy, Adoptive/adverse effects , Aged , Adolescent , Hodgkin Disease/therapy , Hodgkin Disease/immunology , Young Adult , Child , Receptors, Chimeric Antigen/immunology , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Melphalan/therapeutic use , Melphalan/administration & dosage , Lymphoma, Non-Hodgkin/therapy , Lymphoma, Non-Hodgkin/immunology , Carmustine/therapeutic use , Carmustine/administration & dosage , Etoposide/therapeutic use , Etoposide/administration & dosage , Child, Preschool , Cytarabine/therapeutic use , Cytarabine/administration & dosage
5.
Bone Marrow Transplant ; 59(5): 670-679, 2024 May.
Article in English | MEDLINE | ID: mdl-38383713

ABSTRACT

A randomized study (acronym: MC-FludT.14/L Trial II) demonstrated that fludarabine plus treosulfan (30 g/m²) was an effective and well tolerated conditioning regimen for allogeneic hematopoietic cell transplantation (allo-HCT) in older patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). To further evaluate this regimen, all 252 study patients aged 50 to 70 years were compared with similar patients, who underwent allo-HCT after fludarabine/melphalan (140 mg/m²) (FluMel) or busulfan (12.8 mg/kg)/cyclophosphamide (120 mg/kg) (BuCy) regimens and whose data was provided by the European Society for Blood and Marrow Transplantation registry. In 1:1 propensity-score matched-paired analysis (PSA) of AML patients, there was no difference in 2-year-relapse-incidence after FluTreo compared with either FluMel (n = 110, p = 0.28) or BuCy (n = 78, p = 0.98). However, 2-year-non-relapse-mortality (NRM) was lower compared with FluMel (p = 0.019) and BuCy (p < 0.001). Consequently, 2-year-overall-survival (OS) after FluTreo was higher compared with FluMel (p = 0.04) and BuCy (p < 0.001). For MDS patients, no endpoint differences between FluTreo and FluMel (n = 30) were evident, whereas 2-year-OS after FluTreo was higher compared with BuCy (n = 25, p = 0.01) due to lower 2-year-NRM. Multivariate sensitivity analysis confirmed all significant results of PSA. Consequently, FluTreo (30 g/m²) seems to retain efficacy compared with FluMel and BuCy, but is better tolerated by older patients.


Subject(s)
Busulfan , Busulfan/analogs & derivatives , Cyclophosphamide , Leukemia, Myeloid, Acute , Melphalan , Myelodysplastic Syndromes , Registries , Transplantation Conditioning , Vidarabine , Vidarabine/analogs & derivatives , Humans , Busulfan/therapeutic use , Busulfan/administration & dosage , Busulfan/pharmacology , Vidarabine/therapeutic use , Vidarabine/pharmacology , Vidarabine/administration & dosage , Leukemia, Myeloid, Acute/therapy , Leukemia, Myeloid, Acute/drug therapy , Leukemia, Myeloid, Acute/mortality , Myelodysplastic Syndromes/therapy , Myelodysplastic Syndromes/mortality , Myelodysplastic Syndromes/drug therapy , Cyclophosphamide/therapeutic use , Cyclophosphamide/administration & dosage , Cyclophosphamide/pharmacology , Aged , Middle Aged , Transplantation Conditioning/methods , Female , Male , Melphalan/therapeutic use , Melphalan/administration & dosage , Melphalan/pharmacology , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/pharmacology , Hematopoietic Stem Cell Transplantation/methods
6.
Transplant Cell Ther ; 30(5): 510.e1-510.e10, 2024 May.
Article in English | MEDLINE | ID: mdl-38331193

ABSTRACT

The present study compared lower-dose melphalan (80 mg/m2, FM80) and higher-dose melphalan (140 mg/m2, FM140) when administering reduced-intensity conditioning with fludarabine in adult patients with myelodysplastic syndrome (MDS) undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT). We retrospectively analyzed nationwide registry data (2006 to 2019) and compared transplant outcomes between the 2 groups. Ninety-two patients (median age, 61 [interquartile range, 56 to 65] years) were assigned to the FM80 and FM140 groups by propensity score matching. The 3-year overall survival (OS) rate in the FM140 group (63.9%; 95% confidence interval [CI], 52.9% to 73.0%) was significantly higher than that in the FM80 group (54.2%; 95% CI, 37.1% to 52.1%) (P = .038). The FM140 group had a nonsignificantly (P = .095) lower 3-year cumulative incidence of relapse (15.5%; 95% CI, 8.9% to 23.8% versus 26.0%; 95% CI, 17.3% to 35.5%). The 3-year cumulative incidences of nonrelapse mortality were 22.3% (95% CI, 14.1% to 31.8%) and 23.7% (95% CI, 15.4% to 33.2%) in the FM80 and FM140 groups, respectively (P = .49). The beneficial effect of FM140 was more evident in patients with a poor cytogenetic risk. Our findings suggest the superiority of FM140 in patients with MDS undergoing allo-HSCT, especially in high-risk patients.


Subject(s)
Hematopoietic Stem Cell Transplantation , Melphalan , Myelodysplastic Syndromes , Transplantation Conditioning , Transplantation, Homologous , Vidarabine/analogs & derivatives , Humans , Myelodysplastic Syndromes/therapy , Myelodysplastic Syndromes/mortality , Melphalan/administration & dosage , Melphalan/therapeutic use , Middle Aged , Transplantation Conditioning/methods , Male , Female , Hematopoietic Stem Cell Transplantation/methods , Aged , Retrospective Studies , Vidarabine/administration & dosage , Vidarabine/therapeutic use , Graft vs Host Disease , Adult
7.
Transplant Cell Ther ; 30(5): 514.e1-514.e13, 2024 May.
Article in English | MEDLINE | ID: mdl-38373522

ABSTRACT

The purine analog fludarabine (Flu) plays a central role in reduced-intensity conditioning and myeloablative reduced-toxicity conditioning regimens because of limited nonhematologic toxicities. Few reports assess the impact of different dose of Flu on the clinical outcomes and the Flu doses vary across reports. To compare the effect of Flu dose, the clinical outcomes of patients who received Flu and busulfan (FB; n = 1647) or melphalan (Flu with melphalan (FM); n = 1162) conditioning for unrelated bone marrow transplantation were retrospectively analyzed using Japanese nationwide registry data. In the FB group, high-dose Flu (180 mg/m2; HFB) and low-dose Flu (150/125 mg/m2; LFB) were given to 1334 and 313 patients, respectively. The 3-year overall survival (OS) rates were significantly higher in the HFB group than in the LFB group (49.5% versus 39.2%, P < .001). In the HFB and LFB groups, the cumulative incidences were 30.4% and 36.6% (P = .058) for 3-year relapse and 25.1% and 28.1% (P = .24) for 3-year nonrelapse mortality (NRM), respectively. In the multivariate analysis for OS and relapse, Flu dose was identified as an independent prognostic factor (hazard ratio: 0.83, P = .03; hazard ratio: 0.80, P = .043). In the FM group, high-dose Flu (180 mg/m2; HFM) and low-dose Flu (150/125 mg/m2; LFM) were given to 118 and 1044 patients, respectively. The OS, relapse, and NRM after 3 years did not differ significantly between the HFM and LFM groups (48.3% versus 48.8%, P = .92; 23.7% versus 27.2%, P = .55; 31.9% versus 30.8%, P = .67). These findings suggest that high-dose Flu was associated with favorable outcomes in the FB group but not in the FM group.


Subject(s)
Bone Marrow Transplantation , Busulfan , Melphalan , Transplantation Conditioning , Vidarabine , Vidarabine/analogs & derivatives , Humans , Vidarabine/therapeutic use , Vidarabine/administration & dosage , Transplantation Conditioning/methods , Male , Female , Middle Aged , Adult , Retrospective Studies , Melphalan/administration & dosage , Melphalan/therapeutic use , Melphalan/adverse effects , Busulfan/administration & dosage , Busulfan/therapeutic use , Busulfan/adverse effects , Adolescent , Aged , Young Adult , Child , Japan/epidemiology , Graft vs Host Disease/prevention & control , Treatment Outcome
8.
Cytotherapy ; 26(5): 456-465, 2024 May.
Article in English | MEDLINE | ID: mdl-38385909

ABSTRACT

BACKGROUND AIMS: The combination therapy of autologous hematopoietic stem cell transplantation (ASCT) and chimeric antigen receptor T-cell (CART) therapy has been employed to improve outcomes for relapsed or refractory (R/R) B-cell non-Hodgkin-lymphoma (B-NHL). The widely used conditioning regimen before ASCT plus CART therapy reported in the literature was carmustine, etoposide, cytarabine and melphalan (BEAM). However, whether adding fludarabine to the BEAM regimen (BEAMF) can improve the survival of patients with R/R B-NHL remains unknown. METHODS: In total, 39 and 19 patients with R/R B-NHL were enrolled to compare clinical outcomes in the BEAM and BEAMF regimens before ASCT plus CD19/22 CART therapy, respectively. RESULTS: The objective response (OR) rates at 3 months to BEAM and BEAMF regimens before ASCT plus CD19/22 CART therapy were 71.8% and 94.7%, respectively (P = 0.093). The BEAMF regimen showed a trend towards a superior duration of response compared with the BEAM regimen (P = 0.09). After a median follow-up of 28 months (range: 0.93-51.9 months), the BEAMF regimen demonstrated superior 2-year progression-free survival (PFS) (89.5% versus 63.9%; P = 0.048) and 2-year overall survival (OS) (100% vs 77.3%; P = 0.035) compared with the BEAM regimen. In the multivariable Cox regression analysis, OR at month 3 (responders) was remarkably correlated with better OS (hazard ratio: 0.112, P = 0.005) compared with OR (non-responders). CONCLUSIONS: For patients with R/R B-NHL, the BEAMF regimen before ASCT plus CD19/22 CART therapy was correlated with superior PFS and OS than the BEAM regimen, and the BEAMF regimen is a promising alternative conditioning regimen for ASCT plus CAR-T therapy.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols , Carmustine , Cytarabine , Etoposide , Hematopoietic Stem Cell Transplantation , Melphalan , Transplantation, Autologous , Vidarabine , Vidarabine/analogs & derivatives , Humans , Male , Carmustine/therapeutic use , Carmustine/administration & dosage , Melphalan/therapeutic use , Melphalan/administration & dosage , Cytarabine/therapeutic use , Cytarabine/administration & dosage , Female , Hematopoietic Stem Cell Transplantation/methods , Middle Aged , Adult , Transplantation, Autologous/methods , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Etoposide/therapeutic use , Etoposide/administration & dosage , Vidarabine/administration & dosage , Vidarabine/therapeutic use , Prognosis , Aged , Lymphoma, B-Cell/therapy , Lymphoma, B-Cell/mortality , Podophyllotoxin/therapeutic use , Podophyllotoxin/administration & dosage , Immunotherapy, Adoptive/methods , Young Adult , Combined Modality Therapy , Transplantation Conditioning/methods , Receptors, Chimeric Antigen/therapeutic use
9.
JAMA Ophthalmol ; 141(12): 1133-1138, 2023 Dec 01.
Article in English | MEDLINE | ID: mdl-37917073

ABSTRACT

Importance: Intra-arterial chemotherapy (IAC) has quickly gained popularity as a mainstay of treatment for retinoblastoma. Intra-arterial chemotherapy has been described as having several advantages over systemic chemotherapy, including reducing systemic toxicity and neutropenia; however, studies on the risk of neutropenia after IAC remain limited. Objective: To estimate the incidence of neutropenia after IAC, as well as identify risk factors associated with the development of neutropenia. Design, Setting, and Participants: This case series included pediatric patients with unilateral or bilateral retinoblastoma who were treated with IAC at a single quaternary care center from July 13, 2013, to January 6, 2023. Exposure: All patients were treated with IAC and underwent multiple IAC cycles depending on treatment response. The primary chemotherapy agent used was melphalan, but topotecan or carboplatin could be used along with melphalan. Melphalan doses were kept to 0.4 mg/kg or less per cycle. After each IAC cycle, complete blood cell counts were obtained within 10 to 12 days and repeated until the absolute neutrophil count (ANC) was greater than or equal to 1000/µL. Main Outcomes and Measures: The primary outcome was the minimum ANC after each IAC cycle. The secondary outcome was the development of severe (grade 3 or 4) neutropenia (ANC <1000/µL). Regression analyses were used to identify associations between variables and outcomes. Receiver operating characteristic curves were used to calculate threshold dose for each chemotherapy agent potentially associated with the development of severe neutropenia. Results: A total of 64 eyes of 49 patients (mean [SD] age, 1.7 [1.2] years; 25 females [51.0%]) with retinoblastoma were treated with 171 cycles of IAC. The mean (SD) nadir ANC was 1325.3 (890.7)/µL and occurred a median (IQR) of 10 (10-14) days (range, 6-28 days) after IAC administration. The frequency distribution of post-IAC neutropenia grades 0, 1, 2, 3, 4, and missing was 31 (18.1% of cycles), 25 (14.6%), 40 (23.4%), 37 (21.6%), 26 (15.2%), and 12 (7.0%), respectively. Factors weakly correlated with a lower ANC were higher melphalan dose (ß = -2356 [95% CI, -4120.6 to -611.2]; adjusted R2 = 0.251; P = .01) and higher topotecan dose (ß = -4056 [95% CI, -7003.6 to -1344.5]; adjusted R2 = 0.251; P = .006). Conclusions and Relevance: In this case series of patients with retinoblastoma, the incidence of severe neutropenia after IAC was nearly 40%, which is higher than previously reported. Extended laboratory monitoring may aid in capturing previously overlooked cases of neutropenia. Topotecan may be associated with the development of neutropenia; limiting topotecan doses, especially in the setting of a high melphalan dose, may be beneficial in reducing the risk of neutropenia.


Subject(s)
Neutropenia , Retinal Neoplasms , Retinoblastoma , Female , Humans , Child , Infant , Retinoblastoma/drug therapy , Retinal Neoplasms/drug therapy , Retinal Neoplasms/etiology , Melphalan/administration & dosage , Topotecan/administration & dosage , Incidence , Neutropenia/chemically induced , Neutropenia/epidemiology , Neutropenia/drug therapy , Infusions, Intra-Arterial/adverse effects , Risk Factors
11.
Brasília; CONITEC; set. 2022.
Non-conventional in Portuguese | BRISA/RedTESA | ID: biblio-1436127

ABSTRACT

INTRODUÇÃO: O mieloma múltiplo (MM) é uma neoplasia hematológica maligna caracterizada pela proliferação descontrolada de plasmócitos alterados na medula óssea, resultando na produção aumentada de imunoglobulinas não funcional (proteína monoclonal). O acúmulo destas imunoglobulinas e a interação dos plasmócitos com outras células da medula óssea resultam em anemia, lesões ósseas, infecções, hipercalcemia, injúria renal, fadiga e dor. A incidência mundial informada pelo Globocan é de 2,2 novos casos por 100.000 habitantes em homens e 1,5/100.000 em mulheres, com ocorrência, a nível mundial, de 176 mil novos casos e 117 mil mortes em 2020. Carfilzomibe é um agente antineoplásico, inibidor de proteassoma que se liga seletiva e irreversivelmente nos sítios ativos. Tem atividade antiproliferativa e pró-apoptóticas. PERGUNTA DE PESQUISA: Kyprolis® (carfilzomibe) em combinação com dexametasona é eficaz e seguro no tratamento de pacientes com mieloma múltiplo recidivado ou refratário que receberam uma terapia prévia quando em comparação a bortezomibe, ciclofosfamida, dexametasona, cisplatina, doxorrubicina, doxorrubicina lipossomal, etoposídeo, melfalana, vincristina ou talidomida? EVIDÊNCIAS CLÍNICAS: O demandante realizou as buscas na literatura utilizando as seguintes bases de dados: The Cochrane Library, Medline via PubMed, Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), Centre for Reviews and Dissemination (CRD), o que resultou na inclusão de 14 publicações. Na análise conduzida pela Secretaria Executiva foram consideradas 12 publicações referentes a um ensaio clínico randomizado e uma publicação de revisão sistemática. O estudo ENDEAVOR foi um ensaio clínico de fase III, multicêntrico, aberto, que incluiu 929 participantes randomizados para receber carfilzomibe+dexametasona ou bortezomibe+dexametasona. A mediana de SLP foi 18,7 meses (IC 95%, 15,6 a não estimável) no grupo que recebeu carfilzomibe comparado a 9,4 meses (IC 95%, 8,4 a 10,4) no grupo que recebeu bortezomibe, resultando em uma magnitude de benefício absoluto de 9,3 meses (HR 0,53 [IC95% 0,44 a 0,65]; p< 0,0001). A duração mediana de resposta foi 21,3 meses (IC95% 21,3 a não estimável) no grupo carfilzomibe e 10,4 meses (IC95% 9,3 a 13,8) no grupo bortezomibe. Em ambos os grupos, 98% dos participantes apresentaram eventos adversos (qualquer grau), sendo a anemia (43% versus 28%), diarreia (36,7% versus 40,6%) e febre (32,6% versus 15,4%) os eventos mais frequentes nos grupos carfilzomibe e bortezomibe, respectivamente. Os eventos adversos mais comuns grau 3 ou maior foram reportados em 81,9% dos participantes do grupo carfilzomibe (n=379) e 71,1% no grupo bortezomibe (n=324), sendo a anemia (17,3% no grupo carfilzomibe e 10,1% no grupo bortezomibe), hipertensão (14,9% versus 3,3%), trombocitopenia (12,5% versus 14,7%),os três eventos mais frequentes. Insuficiência cardíaca grau 3 ou superior, foi mais frequente no grupo carfilzomibe (6%) que no grupo bortezomibe (2%.). AVALIAÇÃO ECONÔMICA: O demandante apresentou uma análise de custo-efetividade. Na análise do cenário base, em um horizonte temporal de 30 anos, carfilzomibe acrescentou ganhos incrementais de 1,19 QALY, resultando em uma razão de custo utilidade incremental (RCEI) de R$ 195.310,00 por QALY. No cenário proposto pela Secretária-Executiva (horizonte temporal de 10 anos e valor de utilidade derivada do estudo ENDEAVOR), carfilzomibe gerou benefício de 0,63 QALY, com RCEI de R$ 365.830,00 por QALY. ANÁLISE DE IMPACTO ORÇAMENTÁRIO: Com o desconto apresentado pelo demandante, a incorporação de carfilzomibe ao SUS implica em custos adicionais ao sistema de saúde no montante de aproximadamente R$ 365 milhões em cinco anos. A principal limitação da análise foi a estimativa da população. MONITORAMENTO DO HORIZONTE TECNOLÓGICO: Foram identificadas 10 tecnologias potenciais para compor o esquema terapêutico de pacientes adultos com mieloma múltiplo recidivado ou refratário: Belantamabe mafodotin, Ciltacabtageno autoleucel, Elranatamab, Iberdomida, Idecabtagene vicleucel, Isatuximabe, nivolumabe, selinexor, teclistamab, venetoclax. Tais medicamentos são anticorpo monoclonal ligado a um antineoplásico, anticorpo biespecífico, anticorpo monoclonal, imumodulador, terapias baseadas em células T autólogas geneticamente modificadas (CAR-T), inibidor SINE, ou inibidor de Bcl-2. A maioria não possui registro na FDA, EMA ou Anvisa. CONSIDERAÇÕES FINAIS: Os resultados sugerem eficácia e segurança do carfilzomibe na população elegível, porém, no horizonte temporal de 10 anos, com QALY < 1, RCEI de R$ 365.830,00 por QALY e impacto orçamentário de aproximadamente R$ 17 milhões no primeiro ano de incorporação e R$ 131 milhões no 5º ano da incorporação, totalizando R$ 365 milhões em cinco anos. RECOMENDAÇÃO PRELIMINAR DA CONITEC: Os membros do Plenário presentes na 109ª Reunião Ordinária da Conitec, realizada no dia 08 de junho de 2022, sem nenhuma declaração de conflito de interesse, deliberaram por unanimidade, encaminhar o tema para consulta pública com recomendação preliminar desfavorável à incorporação de carfilzomibe para o tratamento de mieloma múltiplo recidivado ou refratário no SUS. Os membros consideraram a evidência científica boa e favorável ao carfilzomibe, porém, a RCEI e o impacto orçamentário foram considerados muito altos para o tratamento de uma doença que já tem outras opções terapêuticas disponíveis no SUS. CONSULTA PÚBLICA: Entre os dias 08/07/2022 e 27/07/2022 foram recebidas 421 contribuições, sendo 152 pelo formulário para contribuições técnico-científicas e 269 pelo formulário para contribuições sobre experiência ou opinião de pacientes, familiares, amigos ou cuidadores de pacientes, profissionais de saúde ou pessoas interessadas no tema. A maioria foi a favor da incorporação de carfilzomibe no SUS (97% via formulário técnico-científico e 100%). O principal benefício apontado nas contribuições técnico-científicas foi sobre a eficácia, aumento da sobrevida e qualidade de vida, além da disponibilidade de mais uma opção terapêutica e promoção da igualdade no tratamento nos sistemas público e privado de saúde. A empresa detentora do registro do medicamento atualizou o preço do medicamento, e consequentemente os valores do impacto orçamentário e avaliação econômica. No impacto orçamentário o valor ficou em R$ 95,3 milhões em cinco anos. Nas contribuições de experiência e opinião, a totalidade dos respondentes discordou da recomendação preliminar da Conitec. No âmbito das opiniões e experiências positivas, foi mencionada a necessidade de garantir o acesso ao carfilzomibe, especialmente por representar uma alternativa para pacientes recidivados e refratários. Também foi citada a eficácia da tecnologia. Como dificuldades, destacou-se a falta de acesso pelo SUS. Em relação a outros medicamentos, foram mencionados benefícios, mas, também, a eficácia limitada no caso de pacientes recidivados. RECOMENDAÇÃO FINAL DA CONITEC: Os membros do Plenário da Conitec, em sua 112ª Reunião Ordinária, realizada no dia 31 de agosto de 2022, deliberaram por maioria simples, recomendar a não incorporação no SUS de carfilzomibe para o tratamento de pacientes com mieloma múltiplo recidivado ou refratário, que receberam terapia prévia, no SUS. Não houve apresentação de dados clínicos adicionais. Com o preço do medicamento atualizado, ainda assim não se mostrou custo-efetivo. Foi assinado o Registro de Deliberação nº 765/2022. DECISÃO: Não incorporar, no âmbito do Sistema Único de Saúde - SUS, o carfilzomibe para o tratamento de pacientes com mieloma múltiplo recidivado ou refratário, conforme a Portaria nº 107, publicada no Diário Oficial da União nº 184, seção 1, página 75, em 27 de setembro de 2022.


Subject(s)
Humans , Thalidomide/administration & dosage , Vincristine/administration & dosage , Dexamethasone/therapeutic use , Doxorubicin/administration & dosage , Cisplatin/administration & dosage , Cyclophosphamide/administration & dosage , Etoposide/therapeutic use , Proteasome Inhibitors/therapeutic use , Bortezomib/administration & dosage , Melphalan/administration & dosage , Multiple Myeloma/drug therapy , Unified Health System , Brazil , Cost-Benefit Analysis/economics , Drug Combinations
12.
N Engl J Med ; 387(2): 132-147, 2022 07 14.
Article in English | MEDLINE | ID: mdl-35660812

ABSTRACT

BACKGROUND: In patients with newly diagnosed multiple myeloma, the effect of adding autologous stem-cell transplantation (ASCT) to triplet therapy (lenalidomide, bortezomib, and dexamethasone [RVD]), followed by lenalidomide maintenance therapy until disease progression, is unknown. METHODS: In this phase 3 trial, adults (18 to 65 years of age) with symptomatic myeloma received one cycle of RVD. We randomly assigned these patients, in a 1:1 ratio, to receive two additional RVD cycles plus stem-cell mobilization, followed by either five additional RVD cycles (the RVD-alone group) or high-dose melphalan plus ASCT followed by two additional RVD cycles (the transplantation group). Both groups received lenalidomide until disease progression, unacceptable side effects, or both. The primary end point was progression-free survival. RESULTS: Among 357 patients in the RVD-alone group and 365 in the transplantation group, at a median follow-up of 76.0 months, 328 events of disease progression or death occurred; the risk was 53% higher in the RVD-alone group than in the transplantation group (hazard ratio, 1.53; 95% confidence interval [CI], 1.23 to 1.91; P<0.001); median progression-free survival was 46.2 months and 67.5 months. The percentage of patients with a partial response or better was 95.0% in the RVD-alone group and 97.5% in the transplantation group (P = 0.55); 42.0% and 46.8%, respectively, had a complete response or better (P = 0.99). Treatment-related adverse events of grade 3 or higher occurred in 78.2% and 94.2%, respectively; 5-year survival was 79.2% and 80.7% (hazard ratio for death, 1.10; 95% CI, 0.73 to 1.65). CONCLUSIONS: Among adults with multiple myeloma, RVD plus ASCT was associated with longer progression-free survival than RVD alone. No overall survival benefit was observed. (Funded by the National Heart, Lung, and Blood Institute and others; DETERMINATION ClinicalTrials.gov number, NCT01208662.).


Subject(s)
Antineoplastic Combined Chemotherapy Protocols , Maintenance Chemotherapy , Multiple Myeloma , Stem Cell Transplantation , Adult , Antineoplastic Agents/adverse effects , Antineoplastic Agents/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Bortezomib/administration & dosage , Bortezomib/adverse effects , Dexamethasone/administration & dosage , Dexamethasone/adverse effects , Disease Progression , Disease-Free Survival , Humans , Lenalidomide/administration & dosage , Lenalidomide/adverse effects , Maintenance Chemotherapy/methods , Melphalan/administration & dosage , Multiple Myeloma/diagnosis , Multiple Myeloma/drug therapy , Multiple Myeloma/surgery , Transplantation, Autologous
13.
Br J Haematol ; 196(3): 639-648, 2022 02.
Article in English | MEDLINE | ID: mdl-34671975

ABSTRACT

Relapsed/refractory multiple myeloma (RRMM) is known to have a high burden of disease and complications associated with refractoriness to prior lines of therapy. Severe pain and fatigue symptoms and impairments in physical and emotional functioning have been strongly linked to reduced health-related quality of life (HRQoL) in patients with RRMM. Assessment of patient reported-outcome measures from the pivotal, Phase II HORIZON study (OP-106; NCT02963493) in patients with RRMM (n = 64) demonstrated that melphalan flufenamide (melflufen) plus dexamethasone treatment preserved HRQoL. Patients had clinically meaningful improvements, even after eight treatment cycles, in relevant scales such as global health status/QoL, physical functioning, emotional functioning, pain, and fatigue. Patients with triple-class-refractory disease (n = 50) displayed similar improvements. Patient-reported outcome deterioration was delayed for a substantial amount of time in patients who experienced a response to melflufen plus dexamethasone treatment relative to patients who did not experience a response. These findings support the notion that treatment with melflufen plus dexamethasone may sustain or improve HRQoL over time in patients with RRMM, including in patients with triple-class-refractory disease for whom outcomes are generally worse. The clinical benefits observed in patients from the HORIZON trial are encouraging and supportive of translation into real-world practice.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Multiple Myeloma/drug therapy , Aged , Aged, 80 and over , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Biomarkers, Tumor , Dexamethasone/administration & dosage , Female , Humans , Male , Melphalan/administration & dosage , Middle Aged , Multiple Myeloma/diagnosis , Multiple Myeloma/epidemiology , Multiple Myeloma/etiology , Neoplasm Grading , Neoplasm Staging , Patient Reported Outcome Measures , Treatment Outcome
14.
Sci Rep ; 11(1): 22507, 2021 11 18.
Article in English | MEDLINE | ID: mdl-34795377

ABSTRACT

Oral mucositis (OM) is one of the most frequent adverse events of high-dose conditioning chemotherapy with melphalan prior to autologous hematopoietic stem cell transplantation (AHSCT). It significantly reduces the patients' quality of life. One of the preventive strategies for OM is cryotherapy. We retrospectively analyzed whether commercially available ice-cream could prevent OM during the melphalan infusion. We retrospectively analyzed 74 patients after AHSCT to see whether there is any correlation between OM and cryotherapy (ice-cream), melphalan dose (140 mg/m2 or 200 mg/m2). The incidence of OM in our study inversely correlated with cryotherapy in the form of ice-cream. Out of 74 patients receiving conditioning chemotherapy with high-dose melphalan, 52 received cryotherapy. Fifteen patients in the cryotherapy group (28.84%) developed OM, whereas 13 patients (59.09%) developed it in the group without cryotherapy. In a multiple linear regression test cryotherapy remained a significant protective factor against OM (p = 0.02) We have also seen the relationship between melphalan dose with OM (p < 0.005). Cryotherapy in the form of ice-cream is associated with a lower rate of OM and, therefore, could potentially be used as a cost-effective, less burdensome, and easy to implement method in prevention of oral mucositis.


Subject(s)
Cryotherapy/methods , Hematologic Neoplasms/therapy , Hematopoietic Stem Cell Transplantation/adverse effects , Ice Cream , Melphalan/administration & dosage , Stomatitis/etiology , Stomatitis/therapy , Transplantation Conditioning/methods , Transplantation, Autologous/adverse effects , Adult , Aged , Female , Hematologic Neoplasms/psychology , Humans , Incidence , Linear Models , Male , Middle Aged , Quality of Life , Retrospective Studies
15.
Lancet Oncol ; 22(12): 1705-1720, 2021 12.
Article in English | MEDLINE | ID: mdl-34774221

ABSTRACT

BACKGROUND: Bortezomib-based induction followed by high-dose melphalan (200 mg/m2) and autologous stem-cell transplantation (MEL200-ASCT) and maintenance treatment with lenalidomide alone is the current standard of care for young and fit patients with newly diagnosed multiple myeloma. We aimed to evaluate the efficacy and safety of different carfilzomib-based induction and consolidation approaches with or without transplantation and of maintenance treatment with carfilzomib plus lenalidomide versus lenalidomide alone in newly diagnosed multiple myeloma. METHODS: UNITO-MM-01/FORTE was a randomised, open-label, phase 2 trial done in 42 Italian academic and community practice centres. We enrolled transplant-eligible patients with newly diagnosed multiple myeloma aged 65 years or younger with a Karnofsky Performance Status of 60% or higher. Patients were stratified according to International Staging System stage (I vs II/III) and age (<60 years vs 60-65 years) and randomly assigned (1:1:1) to KRd plus ASCT (four 28-day induction cycles with carfilzomib plus lenalidomide plus dexamethasone [KRd], melphalan at 200 mg/m2 and autologous stem-cell transplantation [MEL200-ASCT], followed by four 28-day KRd consolidation cycles), KRd12 (12 28-day KRd cycles), or KCd plus ASCT (four 28-day induction cycles with carfilzomib plus cyclophosphamide plus dexamethasone [KCd], MEL200-ASCT, and four 28-day KCd consolidation cycles). Carfilzomib 36 mg/m2 was administered intravenously on days 1, 2, 8, 9, 15, and 16; lenalidomide 25 mg administered orally on days 1-21; cyclophosphamide 300 mg/m2 administered orally on days 1, 8, and 15; and dexamethasone 20 mg administered orally or intravenously on days 1, 2, 8, 9, 15, 16, 22, and 23. Thereafter, patients were stratified according to induction-consolidation treatment and randomly assigned (1:1) to maintenance treatment with carfilzomib plus lenalidomide or lenalidomide alone. Carfilzomib 36 mg/m2 was administered intravenously on days 1-2 and 15-16 every 28 days for up to 2 years; lenalidomide 10 mg was administered orally on days 1-21 every 28 days until progression or intolerance in both groups. The primary endpoints were the proportion of patients with at least a very good partial response after induction with KRd versus KCd and progression-free survival with carfilzomib plus lenalidomide versus lenalidomide alone as maintenance treatment, both assessed in the intention-to-treat population. This trial is registered with ClinicalTrials.gov, NCT02203643. Study recruitment is complete, and all patients are in the follow-up or maintenance phases. FINDINGS: Between Feb 23, 2015, and April 5, 2017, 474 patients were randomly assigned to one of the induction-intensification-consolidation groups (158 to KRd plus ASCT, 157 to KRd12, and 159 to KCd plus ASCT). The median duration of follow-up was 50·9 months (IQR 45·7-55·3) from the first randomisation. 222 (70%) of 315 patients in the KRd group and 84 (53%) of 159 patients in the KCd group had at least a very good partial response after induction (OR 2·14, 95% CI 1·44-3·19, p=0·0002). 356 patients were randomly assigned to maintenance treatment with carfilzomib plus lenalidomide (n=178) or lenalidomide alone (n=178). The median duration of follow-up was 37·3 months (IQR 32·9-41·9) from the second randomisation. 3-year progression-free survival was 75% (95% CI 68-82) with carfilzomib plus lenalidomide versus 65% (58-72) with lenalidomide alone (hazard ratio [HR] 0·64 [95% CI 0·44-0·94], p=0·023). During induction and consolidation, the most common grade 3-4 adverse events were neutropenia (21 [13%] of 158 patients in the KRd plus ASCT group vs 15 [10%] of 156 in the KRd12 group vs 18 [11%] of 159 in the KCd plus ASCT group); dermatological toxicity (nine [6%] vs 12 [8%] vs one [1%]); and hepatic toxicity (13 [8%] vs 12 [8%] vs none). Treatment-related serious adverse events were reported in 18 (11%) of 158 patients in the KRd-ASCT group, 29 (19%) of 156 in the KRd12 group, and 17 (11%) of 159 in the KCd plus ASCT group; the most common serious adverse event was pneumonia, in seven (4%) of 158, four (3%) of 156, and five (3%) of 159 patients. Treatment-emergent deaths were reported in two (1%) of 158 patients in the KRd plus ASCT group, two (1%) of 156 in the KRd12 group, and three (2%) of 159 in the KCd plus ASCT group. During maintenance, the most common grade 3-4 adverse events were neutropenia (35 [20%] of 173 patients on carfilzomib plus lenalidomide vs 41 [23%] of 177 patients on lenalidomide alone); infections (eight [5%] vs 13 [7%]); and vascular events (12 [7%] vs one [1%]). Treatment-related serious adverse events were reported in 24 (14%) of 173 patients on carfilzomib plus lenalidomide versus 15 (8%) of 177 on lenalidomide alone; the most common serious adverse event was pneumonia, in six (3%) of 173 versus five (3%) of 177 patients. One patient died of a treatment-emergent adverse event in the carfilzomib plus lenalidomide group. INTERPRETATION: Our data show that KRd plus ASCT showed superiority in terms of improved responses compared with the other two treatment approaches and support the prospective randomised evaluation of KRd plus ASCT versus standards of care (eg, daratumumab plus bortezomib plus thalidomide plus dexamethasone plus ASCT) in transplant-eligible patients with multiple myeloma. Carfilzomib plus lenalidomide as maintenance therapy also improved progression-free survival compared with the standard-of-care lenalidomide alone. FUNDING: Amgen, Celgene/Bristol Myers Squibb. TRANSLATION: For the Italian translation of the abstract see Supplementary Materials section.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Hematopoietic Stem Cell Transplantation/mortality , Multiple Myeloma/therapy , Antibodies, Monoclonal/administration & dosage , Bortezomib/administration & dosage , Combined Modality Therapy , Cyclophosphamide/administration & dosage , Dexamethasone/administration & dosage , Female , Follow-Up Studies , Humans , Lenalidomide/administration & dosage , Male , Melphalan/administration & dosage , Middle Aged , Multiple Myeloma/pathology , Oligopeptides/administration & dosage , Prognosis , Survival Rate , Thalidomide/administration & dosage , Transplantation, Autologous
16.
Cancer Sci ; 112(12): 5011-5019, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34626515

ABSTRACT

Bortezomib (Btz) shows robust efficacy in patients with multiple myeloma (MM); however, some patients experience suboptimal responses and show specific toxicities. Therefore, we attempted to identify specific HLA alleles associated with Btz-related toxicities and response to treatment. Eighty-two transplant-ineligible patients with newly diagnosed MM enrolled in a phase II study (JCOG1105) comparing two less intensive melphalan, prednisolone, plus Btz (MPB) regimens were subjected to HLA typing. The frequency of each allele was compared between the groups, categorized based on toxicity grades and responses to MPB therapy. Among 82 patients, the numbers of patients with severe peripheral neuropathy (PN; grade 2 or higher), skin disorders (SD; grade 2 or higher), and pneumonitis were 16 (19.5%), 15 (18.3%), and 6 (7.3%), respectively. Complete response was achieved in 10 (12.2%) patients. Although no significant HLA allele was identified by multiple comparisons, several candidates were identified. HLA-B*40:06 was more prevalent in patients with severe PN than in those with less severe PN (odds ratio [OR] = 6.76). HLA-B*40:06 and HLA-DRB1*12:01 were more prevalent in patients with SD than in those with less severe SD (OR = 7.47 and OR = 5.55, respectively). HLA-DRB1*08:02 clustered in the group of patients with pneumonitis (OR = 11.34). Complete response was achieved in patients carrying HLA-DQB1*03:02, HLA-DQB1*05:01, and HLA-DRB1*01:01 class II alleles. HLA genotyping could help predict Btz-induced toxicity and treatment efficacy in patients with MM, although this needs further validation.


Subject(s)
Antineoplastic Agents/administration & dosage , Bortezomib/administration & dosage , Genotyping Techniques/methods , HLA Antigens/genetics , Melphalan/administration & dosage , Multiple Myeloma/drug therapy , Prednisolone/administration & dosage , Aged , Antineoplastic Agents/adverse effects , Bortezomib/adverse effects , Female , Gene Frequency , Humans , Japan , Male , Melphalan/adverse effects , Multiple Myeloma/genetics , Peripheral Nervous System Diseases/chemically induced , Peripheral Nervous System Diseases/epidemiology , Pneumonia/chemically induced , Pneumonia/epidemiology , Prednisolone/adverse effects , Skin Diseases/chemically induced , Skin Diseases/epidemiology , Treatment Outcome
19.
Curr Opin Oncol ; 33(6): 642-647, 2021 11 01.
Article in English | MEDLINE | ID: mdl-34419954

ABSTRACT

PURPOSE OF REVIEW: In this review, we discuss the most important aspects of the role of high-dose melphalan (HDM) and autologous stem-cell transplantation (ASCT) in the treatment of multiple myeloma (MM). RECENT FINDINGS: Almost 40 years after the publication of the first study on safety and efficacy of HDM and ASCT in MM patients, and despite the introduction of several drugs and combinations with various targets on the plasma cell and the surrounding microenvironment, HDM-ASCT still stands as a standard of care for the upfront treatment of newly diagnosed MM patients. Indeed, all attempts to replace HDM-ASCT with novel-agent-based, non-transplant strategies have failed to demonstrate their efficacy, at least in terms of progression-free survival. SUMMARY: Despite such a long history in MM, a number of open issues regarding HDM-ASCT still exist, from the choice between using transplant in first-line therapy or at relapse to the use of tandem HDM-ASCT in high-risk patients. With the introduction of more and more effective multidrug regimens and of novel immunotherapeutic approaches, the challenge between transplant and non-transplant is not over yet.


Subject(s)
Melphalan/administration & dosage , Multiple Myeloma/therapy , Stem Cell Transplantation/methods , Antineoplastic Agents, Alkylating/administration & dosage , Humans , Multiple Myeloma/drug therapy , Randomized Controlled Trials as Topic
20.
Int J Mol Sci ; 22(12)2021 Jun 16.
Article in English | MEDLINE | ID: mdl-34208594

ABSTRACT

This article describes the synthesis and characterization of ß-cyclodextrin-based nano-sponges (NS) inclusion compounds (IC) with the anti-tumor drugs melphalan (MPH) and cytoxan (CYT), and the addition of gold nanoparticles (AuNPs) onto both systems, for the potential release of the drugs by means of laser irradiation. The NS-MPH and NS-CYT inclusion compounds were characterized using scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), energy dispersive spectroscopy (EDS), thermogravimetric analysis (TGA), UV-Vis, and proton nuclear magnetic resonance (1H-NMR). Thus, the inclusion of MPH and CYT inside the cavities of NSs was confirmed. The association of AuNPs with the ICs was confirmed by SEM, EDS, TEM, and UV-Vis. Drug release studies using NSs synthesized with different molar ratios of ß-cyclodextrin and diphenylcarbonate (1:4 and 1:8) demonstrated that the ability of NSs to entrap and release the drug molecules depends on the crosslinking between the cyclodextrin monomers. Finally, irradiation assays using a continuous laser of 532 nm showed that photothermal drug release of both MPH and CYT from the cavities of NSs via plasmonic heating of AuNPs is possible.


Subject(s)
Cyclodextrins , Cyclophosphamide/administration & dosage , Drug Carriers , Gold , Melphalan/administration & dosage , Metal Nanoparticles , Chemistry Techniques, Synthetic , Cyclodextrins/chemistry , Drug Carriers/chemistry , Drug Delivery Systems , Drug Liberation/radiation effects , Gold/chemistry , Light , Magnetic Resonance Spectroscopy , Metal Nanoparticles/chemistry , Metal Nanoparticles/ultrastructure , Temperature , Thermogravimetry , Tocopherols , X-Ray Diffraction
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