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1.
Ann Lab Med ; 2024 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-39344146

RESUMEN

Background: NUP98 rearrangements (NUP98r), associated with various hematologic malignancies, involve more than 30 partner genes. Despite their clinical significance, reports on the clinicopathological characteristics of rare NUP98r remain limited. We investigated the characteristics of patients with myeloid neoplasms harboring NUP98r among those identified as having 11p15 translocation in chromosomal analysis. Methods: We retrospectively reviewed results from bone marrow chromosomal analyses conducted between 2011 and 2023 and identified 15 patients with 11p15 translocation. Subsequently, NUP98r were evaluated using FISH and/or reverse transcription PCR, and clinical and laboratory data of the patients were analyzed. Results: NUP98r were identified in 11 patients initially diagnosed as having AML (N=8), myelodysplastic syndrome (N=2), or chronic myelomonocytic leukemia (N=1), with a median age of 44 yrs (range, 4-77 yrs). Three patients had a history of chemotherapy. In total, five NUP98 fusions were identified: NUP98::DDX10 (N=3), NUP98::HOXA9 (N=2), NUP98::PSIP1 (N=2), NUP98::PRRX1 (N=1), and NUP98::HOXC11 (N=1). Patients with NUP98r exhibited a poor prognosis, with a median overall survival of 12.0 months (95% confidence interval [CI], 3.4-29.6 months) and a 5-yr overall survival rate of 18.2% (95% CI, 5.2%-63.7%). Conclusions: Our study revealed the clinical and genetic characteristics of patients with myeloid neoplasms harboring rare and non-cryptic NUP98r. Given its association with poor prognosis, a comprehensive evaluation is crucial for identifying previously underdiagnosed NUP98r in patients with myeloid neoplasms.

2.
Eur J Oncol Nurs ; 72: 102684, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39163755

RESUMEN

PURPOSE: To explore and understand the conflict in decision-making of hematopoietic stem cell transplantation in patients with hematological neoplasms. METHODS: A descriptive qualitative study of 16 patients with hematologic neoplasms in the hematology department was conducted between February 2022 and May 2022. Purposive sampling was used to select participants. Face-to-face in-depth personal interviews were performed. Interviews were recorded, transcribed, and coded. This descriptive qualitative study adhered to the COREQ checklist. RESULTS: All patients indicated difficulties in making decisions regarding hematopoietic stem cell transplantation. Five themes were identified: (1) weighing the pros and cons of HSCT, (2) financial burden versus desire for rebirth, (3) treatment urgency versus being unprepared, (4) saving oneself versus damaging loved ones, and (5) family companionship versus emotional isolation. These themes reflect the contradictions, entanglements, and realistic conflicts in decision-making regarding hematopoietic stem cell transplantation for patients with hematological neoplasms. CONCLUSIONS: This study identified multiple conflicts of decision-making in patients with hematologic neoplasms regarding decisions on hematopoietic stem cell transplantations. Healthcare workers should provide patients with disease knowledge, doctor-patient and intra-family communication, and access to financial support in order to resolve their conflicts and ultimately help them make the decision that is most optimum for them.


Asunto(s)
Toma de Decisiones , Neoplasias Hematológicas , Trasplante de Células Madre Hematopoyéticas , Investigación Cualitativa , Humanos , Trasplante de Células Madre Hematopoyéticas/psicología , Neoplasias Hematológicas/terapia , Neoplasias Hematológicas/psicología , Masculino , Femenino , Persona de Mediana Edad , Adulto , Anciano , Conflicto Psicológico
3.
Crit Care ; 28(1): 285, 2024 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-39215292

RESUMEN

Immunosuppressed patients, particularly those with cancer, represent a momentous and increasing portion of the population, especially as cancer incidence rises with population growth and aging. These patients are at a heightened risk of developing severe infections, including sepsis and septic shock, due to multiple immunologic defects such as neutropenia, lymphopenia, and T and B-cell impairment. The diverse and complex nature of these immunologic profiles, compounded by the concomitant use of immunosuppressive therapies (e.g., corticosteroids, cytotoxic drugs, and immunotherapy), superimposed by the breakage of natural protective barriers (e.g., mucosal damage, chronic indwelling catheters, and alterations of anatomical structures), increases the risk of various infections. These and other conditions that mimic sepsis pose substantial diagnostic and therapeutic challenges. Factors that elevate the risk of progression to septic shock in these patients include advanced age, pre-existing comorbidities, frailty, type of cancer, the severity of immunosuppression, hypoalbuminemia, hypophosphatemia, Gram-negative bacteremia, and type and timing of responses to initial treatment. The management of vulnerable cancer patients with sepsis or septic shock varies due to biased clinical practices that may result in delayed access to intensive care and worse outcomes. While septic shock is typically associated with poor outcomes in patients with malignancies, survival has significantly improved over time. Therefore, understanding and addressing the unique needs of cancer patients through a new paradigm, which includes the integration of innovative technologies into our healthcare system (e.g., wireless technologies, medical informatics, precision medicine), targeted management strategies, and robust clinical practices, including early identification and diagnosis, coupled with prompt admission to high-level care facilities that promote a multidisciplinary approach, is crucial for improving their prognosis and overall survival rates.


Asunto(s)
Huésped Inmunocomprometido , Neoplasias , Choque Séptico , Humanos , Neoplasias/complicaciones
4.
J Immunother Cancer ; 12(6)2024 Jun 06.
Artículo en Inglés | MEDLINE | ID: mdl-38844406

RESUMEN

The bispecific T cell-binding antibody blinatumomab (CD19/CD3) is widely and successfully used for the treatment of children with relapsed or refractory B-cell precursor acute lymphoblastic leukemia (BCP-ALL). Here, we report the efficacy of a single course of blinatumomab instead of consolidation chemotherapy to eliminate minimal residual disease (MRD) and maintain stable MRD-negativity in children with primary BCP-ALL.Between February 2020 and November 2022, 177 children with non-high-risk BCP-ALL were enrolled in the ALL-MB 2019 pilot study (NCT04723342). Patients received the usual risk-adapted induction therapy according to the ALL-MB 2015 protocol. Those who achieved a complete remission at the end of induction (EOI) received treatment with blinatumomab immediately after induction at a dose of 5 µg/m2/day for 7 days and 21 days at a dose of 15 µg/m2/day, followed by 12 months of maintenance therapy. MRD was measured using multicolor flow cytometry (MFC) at the EOI, then immediately after blinatumomab treatment, and then four times during maintenance therapy at 3-month intervals.All 177 patients successfully completed induction therapy and achieved a complete hematological remission. In 174 of these, MFC-MRD was measured at the EOI. 143 patients (82.2%) were MFC-MRD negative and the remaining 31 patients had varying degrees of MFC-MRD positivity.MFC-MRD was assessed in all 176 patients who completed the blinatumomab course. With one exception, all patients achieved MFC-MRD negativity after blinatumomab, regardless of the MFC-MRD score at EOI. One adolescent girl with high MFC-MRD positivity at EOI remained MFC-MRD positive. Of 175 patients who had completed 6 months of maintenance therapy, MFC-MRD data were available for 156 children. Of these, 155 (99.4%) were MFC-MRD negative. Only one boy with t(12;21) (p13;q22)/ETV6::RUNX1 became MFC-MRD positive again. The remaining 174 children had completed the entire therapy. MFC-MRD was examined in 154 of them, and 153 were MFC-MRD negative. A girl with hypodiploid BCP-ALL showed a reappearance of MFC-MRD with subsequent relapse.In summary, a single 28-day course of blinatumomab immediately after induction, followed by 12 months of maintenance therapy, is highly effective in achieving MRD-negativity in children with newly diagnosed non-high risk BCP-ALL and maintaining MRD-negative remission at least during the treatment period.


Asunto(s)
Anticuerpos Biespecíficos , Neoplasia Residual , Leucemia-Linfoma Linfoblástico de Células Precursoras B , Adolescente , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Anticuerpos Biespecíficos/uso terapéutico , Anticuerpos Biespecíficos/farmacología , Quimioterapia de Consolidación/métodos , Quimioterapia de Mantención/métodos , Neoplasia Residual/tratamiento farmacológico , Proyectos Piloto , Leucemia-Linfoma Linfoblástico de Células Precursoras B/tratamiento farmacológico
5.
Diagnostics (Basel) ; 14(11)2024 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-38893589

RESUMEN

Myeloid sarcoma, a rare extramedullary manifestation of acute myeloid leukemia (AML), can occur in various anatomic sites but seldom involves the gastrointestinal tract. We report the unusual case of a 49-year-old man with a history of AML who initially presented with abdominal pain and imaging findings suggestive of a paracolic abscess. However, the lesion rapidly progressed to a large descending colon mass with peritoneal involvement over five weeks. Surgical resection and histopathological examination confirmed a diagnosis of myeloid sarcoma. This case highlights the potential of myeloid sarcoma to mimic an inflammatory colonic process at initial presentation prior to manifesting as an overt mass lesion. Although exceedingly rare, myeloid sarcoma should be considered in patients with a history of AML presenting with colon lesions, particularly in those with an aggressive clinical course. Early recognition may expedite appropriate treatment and prevent unnecessary procedures. This report also underscores the importance of correlating imaging findings with clinical history and histopathology findings to establish an accurate diagnosis.

6.
Expert Rev Hematol ; 17(7): 295-312, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38919090

RESUMEN

INTRODUCTION: Chimeric Antigen Receptor (CAR) T-cells and Bispecific Antibodies (BsAb) are the leading platforms for redirecting the immune system against cells expressing the specific antigen, revolutionizing the treatment of hematological malignancies, including multiple myeloma (MM). In MM, drug-resistant relapses are the main therapy-limiting factor and the leading cause of why the disease is still considered incurable. T-cell-engaging therapies hold promise in improving the treatment of MM. However, the effectiveness of these treatments may be hindered by T-cell fitness. T-cell exhaustion is a condition of a gradual decline in effector function, reduced cytokine secretion, and increased expression of inhibitory receptors due to chronic antigen stimulation. AREAS COVERED: This review examines findings about T-cell exhaustion in MM in the context of T-cell redirecting BsAbs and CAR-T treatment. EXPERT OPINION: The fitness of T-cells has become an important factor in the development of T-cell redirecting therapies. The way T-cell exhaustion relates to these therapies could affect the further development of CAR and BsAbs technologies, as well as the strategies used for clinical use. Therefore, this review aims to explore the current understanding of T-cell exhaustion in MM and its relationship to these therapies.


Asunto(s)
Anticuerpos Biespecíficos , Inmunoterapia Adoptiva , Mieloma Múltiple , Receptores Quiméricos de Antígenos , Linfocitos T , Mieloma Múltiple/terapia , Mieloma Múltiple/inmunología , Humanos , Linfocitos T/inmunología , Linfocitos T/metabolismo , Receptores Quiméricos de Antígenos/metabolismo , Receptores Quiméricos de Antígenos/inmunología , Inmunoterapia Adoptiva/métodos , Inmunoterapia Adoptiva/efectos adversos , Anticuerpos Biespecíficos/uso terapéutico , Agotamiento de Células T
7.
Support Care Cancer ; 32(7): 462, 2024 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-38922487

RESUMEN

PURPOSE: To estimate the prevalence of peripherally inserted central catheter (PICC)-related venous thrombosis in patients with hematological malignancies. METHODS: A systematic review of observational studies that evaluated the occurrence of PICC-related venous thrombosis in children, adults, and older people with hematological malignancies was conducted. Searches were carried out on June 12th, 2023 on PubMed, CINAHL, Embase, Web of Science Core Collection, Scopus, and LILACS, and to gray literature on Google Scholar, and ProQuest Dissertations and Theses Global. Eligibility criteria were applied independently by two reviewers, first on the titles and abstracts on the Rayyan platform and then on the full text of eligible studies. Risk of bias was assessed by the JBI checklist. Data were summarized descriptively, and the meta-analysis was carried out using the MetaXL 5.3 software. The review followed JBI guidelines and PRISMA for reporting. RESULTS: In the 40 studies included, prevalence of PICC-related venous thrombosis was 9% in general, 9% in adults, and 6% in children with hematological malignancies. Most studies only evaluated cases of symptomatic thrombosis (n = 25; 64%). CONCLUSION: Patients with hematological malignancies using PICC have an estimated prevalence of PICC-related venous thrombosis of 9%, and this rate may be underestimated due to the consideration of mostly symptomatic cases.


Asunto(s)
Cateterismo Periférico , Neoplasias Hematológicas , Trombosis de la Vena , Humanos , Neoplasias Hematológicas/complicaciones , Prevalencia , Cateterismo Periférico/efectos adversos , Trombosis de la Vena/epidemiología , Trombosis de la Vena/etiología , Niño , Adulto , Cateterismo Venoso Central/efectos adversos
8.
Farm Hosp ; 2024 May 27.
Artículo en Inglés, Español | MEDLINE | ID: mdl-38806362

RESUMEN

OBJECTIVE: The main objective was to analyze unjustified discrepancies during the medication reconciliation process in patients admitted to the Hematology Service of our hospital and the pharmaceutical interventions. As a secondary objective, to detect possible points of the procedure to be perfected with a view to protocolizing the medication reconciliation process in hematological patients that adapts to the conditions of our center. METHODS: Cross-sectional observational pilot study carried out in a reference hospital in hematology for a population of 800,000 inhabitants. Adult inpatients admitted to the Hematology Service between August and October 2022 whose medication had been reconciled were included. The main variables were: number and type of unjustified discrepancy, proposed pharmaceutical intervention, and acceptance rate. RESULTS: 36 conciliation processes were analyzed, 34 admissions and 2 intrahospital transfer. 58.3% of the patients presented at least one unjustified discrepancy. 38 unjustified discrepancies were detected, with an acceptance of pharmaceutical interventions of 97.4%. The most common types of discrepancy were medication omission (56.8%) and drug interaction (24.3%). The most frequent pharmaceutical interventions were reintroducing medication (48.6%) and treatment discontinuation (16.2%). Polypharmacy and chemotherapy multiplied by 4 the probability of presenting drug interactions. CONCLUSIONS: The most common unjustified discrepancies in the medication reconciliation process in hospitalized hematology patients are: Medication omission and drug interactions. The reintroduction of medication and suspension of the prescription are the most frequent accepted pharmaceutical interventions. Polypharmacy is related to an increase in unjustified discrepancies. The factors that promote the appearance of interactions are admissions to receive chemotherapy treatment and polypharmacy. The main point of improvement detected is the need to create a circuit that allows conciliation to be carried out on discharge. Medication reconciliation contribute to improving patient safety by reducing medication errors.

9.
Cureus ; 16(4): e58838, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38784334

RESUMEN

While Pyoderma gangrenosum (PG) is commonly associated with hematological disorders such as acute myeloid leukemia (AML), it typically presents concurrently with the hemopathy, mostly in its bullous form, among middle-aged individuals. Here, we report the unusual case of a young female patient who presented with PG in its ulcerative form, three weeks before the onset of AML. A 31-year-old female presented with a one-week history of painful perianal papulopustule that evolved into an irregular ulceration with violaceous borders, mucopurulent serosity, and erythematous surrounding skin. Laboratory work-up demonstrated elevated inflammatory markers and hyperleukocytosis, with no cytopenia, and normal peripheral blood smear. Two weeks later, the ulcer growth was noted with a similar ulceration at a venipuncture site. A complete blood count revealed pancytopenia, with 45% blasts on the peripheral blood smear. Skin biopsies showed an aseptic neutrophilic infiltrate in favor of PG. Intravenous methylprednisolone was administered with rapid resolution of the lesions. However, the patient died shortly after. The post-mortem results of bone marrow aspirate revealed AML, with immunohistochemistry of the skin lesions confirming the clonality of neutrophils derived from the leukemic clone.  This case highlights a distinctive clinical presentation, illustrating the manifestation of PG three weeks before the onset of AML in its ulcerative rather than bullous form, in a young female patient.

10.
J Immunother Cancer ; 12(5)2024 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-38754915

RESUMEN

BACKGROUND: Allogeneic hematopoietic stem cell transplantation (HSCT) remains the standard of care for chemotherapy-refractory leukemia patients, but cure rates are still dismal. To prevent leukemia relapse following HSCT, we aim to improve the early graft-versus-leukemia effect mediated by natural killer (NK) cells. Our approach is based on the adoptive transfer of Therapeutic Inducers of Natural Killer cell Killing (ThINKK). ThINKK are expanded and differentiated from HSC, and exhibit blood plasmacytoid dendritic cell (pDC) features. We previously demonstrated that ThINKK stimulate NK cells and control acute lymphoblastic leukemia (ALL) development in a preclinical mouse model of HSCT for ALL. Here, we assessed the cellular identity of ThINKK and investigated their potential to activate allogeneic T cells. We finally evaluated the effect of immunosuppressive drugs on ThINKK-NK cell interaction. METHODS: ThINKK cellular identity was explored using single-cell RNA sequencing and flow cytometry. Their T-cell activating potential was investigated by coculture of allogeneic T cells and antigen-presenting cells in the presence or the absence of ThINKK. A preclinical human-to-mouse xenograft model was used to evaluate the impact of ThINKK injections on graft-versus-host disease (GvHD). Finally, the effect of immunosuppressive drugs on ThINKK-induced NK cell cytotoxicity against ALL cells was tested. RESULTS: The large majority of ThINKK shared the key characteristics of canonical blood pDC, including potent type-I interferon (IFN) production following Toll-like receptor stimulation. A minor subset expressed some, although not all, markers of other dendritic cell populations. Importantly, while ThINKK were not killed by allogeneic T or NK cells, they did not increase T cell proliferation induced by antigen-presenting cells nor worsened GvHD in vivo. Finally, tacrolimus, sirolimus or mycophenolate did not decrease ThINKK-induced NK cell activation and cytotoxicity. CONCLUSION: Our results indicate that ThINKK are type I IFN producing cells with low T cell activation capacity. Therefore, ThINKK adoptive immunotherapy is not expected to increase the risk of GvHD after allogeneic HSCT. Furthermore, our data predict that the use of tacrolimus, sirolimus or mycophenolate as anti-GvHD prophylaxis regimen will not decrease ThINKK therapeutic efficacy. Collectively, these preclinical data support the testing of ThINKK immunotherapy in a phase I clinical trial.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Células Asesinas Naturales , Células Asesinas Naturales/inmunología , Células Asesinas Naturales/metabolismo , Células Asesinas Naturales/efectos de los fármacos , Humanos , Trasplante de Células Madre Hematopoyéticas/métodos , Animales , Ratones , Trasplante Homólogo , Células Dendríticas/inmunología , Células Dendríticas/metabolismo , Femenino , Enfermedad Injerto contra Huésped/prevención & control
11.
Crit Care Explor ; 6(6): e1093, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38813435

RESUMEN

OBJECTIVES: To develop and validate a prediction model for 1-year mortality in patients with a hematologic malignancy acutely admitted to the ICU. DESIGN: A retrospective cohort study. SETTING: Five university hospitals in the Netherlands between 2002 and 2015. PATIENTS: A total of 1097 consecutive patients with a hematologic malignancy were acutely admitted to the ICU for at least 24 h. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: We created a 13-variable model from 22 potential predictors. Key predictors included active disease, age, previous hematopoietic stem cell transplantation, mechanical ventilation, lowest platelet count, acute kidney injury, maximum heart rate, and type of malignancy. A bootstrap procedure reduced overfitting and improved the model's generalizability. This involved estimating the optimism in the initial model and shrinking the regression coefficients accordingly in the final model. We assessed performance using internal-external cross-validation by center and compared it with the Acute Physiology and Chronic Health Evaluation II model. Additionally, we evaluated clinical usefulness through decision curve analysis. The overall 1-year mortality rate observed in the study was 62% (95% CI, 59-65). Our 13-variable prediction model demonstrated acceptable calibration and discrimination at internal-external validation across centers (C-statistic 0.70; 95% CI, 0.63-0.77), outperforming the Acute Physiology and Chronic Health Evaluation II model (C-statistic 0.61; 95% CI, 0.57-0.65). Decision curve analysis indicated overall net benefit within a clinically relevant threshold probability range of 60-100% predicted 1-year mortality. CONCLUSIONS: Our newly developed 13-variable prediction model predicts 1-year mortality in hematologic malignancy patients admitted to the ICU more accurately than the Acute Physiology and Chronic Health Evaluation II model. This model may aid in shared decision-making regarding the continuation of ICU care and end-of-life considerations.


Asunto(s)
Neoplasias Hematológicas , Unidades de Cuidados Intensivos , Humanos , Neoplasias Hematológicas/mortalidad , Neoplasias Hematológicas/terapia , Masculino , Estudios Retrospectivos , Persona de Mediana Edad , Femenino , Anciano , Países Bajos/epidemiología , Adulto , APACHE , Estudios de Cohortes
12.
Ann Epidemiol ; 94: 27-32, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38614217

RESUMEN

PURPOSE: We assessed the risk of congenital anomalies in children who have a sibling with cancer. METHODS: We performed a matched cohort study of children born between 2006 and 2022 in Quebec. The exposure was having a sibling with cancer. Exposed children were matched to unexposed children based on sex, number of siblings, birth order, and year. The outcome included heart defects, orofacial clefts, and other anomalies. Using conditional logistic regression, we estimated odds ratios (OR) and 95 % confidence intervals (CI) for the association between having a sibling with cancer and the likelihood of having a congenital anomaly. RESULTS: A total of 2403 children who had a sibling with cancer were matched to 240,257 unexposed children. Congenital anomalies were more frequent in children who had a sibling with cancer compared with unexposed children (10.3 % vs 8.9 %). Overall, having a sibling with cancer was only weakly associated with congenital anomalies (OR 1.18, 95 % CI 1.04-1.35). Exposed children tended to have greater odds of polydactyly/syndactyly (OR 1.89, 95 % CI 1.11-3.21) and urinary defects (OR 1.50, 95 % CI 1.09-2.08) compared with unexposed children. CONCLUSIONS: Children who have a sibling with cancer have an only weakly elevated risk of congenital anomalies.


Asunto(s)
Anomalías Congénitas , Neoplasias , Hermanos , Humanos , Masculino , Femenino , Anomalías Congénitas/epidemiología , Neoplasias/epidemiología , Quebec/epidemiología , Niño , Preescolar , Estudios de Cohortes , Lactante , Factores de Riesgo , Modelos Logísticos , Recién Nacido , Estudios de Casos y Controles , Oportunidad Relativa , Adolescente
13.
J Immunother Cancer ; 12(4)2024 Apr 27.
Artículo en Inglés | MEDLINE | ID: mdl-38677881

RESUMEN

BACKGROUND: A bidirectional promoter-driven chimeric antigen receptor (CAR) cassette provides the simultaneous expression of two CARs, which significantly enhances dual antigen-targeted CAR T-cell therapy. METHODS: We developed a second-generation CAR directing CD19 and CD20 antigens, incorporating them in a head-to-head orientation from a bidirectional promoter using a single Sleeping Beauty transposon system. The efficacy of bidirectional promoter-driven dual CD19 and CD20 CAR T cells was determined in vitro against cell lines expressing either, or both, CD19 and CD20 antigens. In vivo antitumor activity was tested in Raji lymphoma-bearing immunodeficient NOD-scid IL2Rgammanull (NSG) mice. RESULTS: Of all tested promoters, the bidirectional EF-1α promoter optimally expressed transcripts from both sense (CD19-CAR) and antisense (GFP.CD20-CAR) directions. Superior cytotoxicity, cytokine production and antigen-specific activation were observed in vitro in the bidirectional EF-1α promoter-driven CD19/CD20 CAR T cells. In contrast, a unidirectional construct driven by the EF-1α promoter, but using self-cleaving peptide-linked CD19 and CD20 CARs, showed inferior expression and in vitro function. Treatment of mice bearing advanced Raji lymphomas with bidirectional EF-1α promoter-driven CD19/CD20 CAR T cells effectively controlled tumor growth and extended the survival of mice compared with group treated with single antigen targeted CAR T cells. CONCLUSION: The use of bidirectional promoters in a single vector offers advantages of size and robust CAR expression with the potential to expand use in other forms of gene therapies like CAR T cells.


Asunto(s)
Antígenos CD19 , Antígenos CD20 , Elementos Transponibles de ADN , Inmunoterapia Adoptiva , Regiones Promotoras Genéticas , Receptores Quiméricos de Antígenos , Antígenos CD19/inmunología , Antígenos CD19/genética , Humanos , Animales , Antígenos CD20/genética , Antígenos CD20/metabolismo , Antígenos CD20/inmunología , Ratones , Receptores Quiméricos de Antígenos/genética , Receptores Quiméricos de Antígenos/metabolismo , Receptores Quiméricos de Antígenos/inmunología , Inmunoterapia Adoptiva/métodos , Ratones Endogámicos NOD , Línea Celular Tumoral , Ratones SCID , Ensayos Antitumor por Modelo de Xenoinjerto
14.
J Immunother Cancer ; 12(4)2024 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-38580329

RESUMEN

BACKGROUND: Hematopoietic cell transplantation (HCT) is an effective treatment for pediatric patients with high-risk, refractory, or relapsed acute myeloid leukemia (AML). However, a large proportion of transplanted patients eventually die due to relapse. To improve overall survival, we propose a combined strategy based on cord blood (CB)-HCT with the application of AML-specific T cell receptor (TCR)-engineered T cell therapy derived from the same CB graft. METHODS: We produced CB-CD8+ T cells expressing a recombinant TCR (rTCR) against Wilms tumor 1 (WT1) while lacking endogenous TCR (eTCR) expression to avoid mispairing and competition. CRISPR-Cas9 multiplexing was used to target the constant region of the endogenous TCRα (TRAC) and TCRß (TRBC) chains. Next, an optimized method for lentiviral transduction was used to introduce recombinant WT1-TCR. The cytotoxic and migration capacity of the product was evaluated in coculture assays for both cell lines and primary pediatric AML blasts. RESULTS: The gene editing and transduction procedures achieved high efficiency, with up to 95% of cells lacking eTCR and over 70% of T cells expressing rWT1-TCR. WT1-TCR-engineered T cells lacking the expression of their eTCR (eTCR-/- WT1-TCR) showed increased cell surface expression of the rTCR and production of cytotoxic cytokines, such as granzyme A and B, perforin, interferon-γ (IFNγ), and tumor necrosis factor-α (TNFα), on antigen recognition when compared with WT1-TCR-engineered T cells still expressing their eTCR (eTCR+/+ WT1-TCR). CRISPR-Cas9 editing did not affect immunophenotypic characteristics or T cell activation and did not induce increased expression of inhibitory molecules. eTCR-/- WT1-TCR CD8+ CB-T cells showed effective migratory and killing capacity in cocultures with neoplastic cell lines and primary AML blasts, but did not show toxicity toward healthy cells. CONCLUSIONS: In summary, we show the feasibility of developing a potent CB-derived CD8+ T cell product targeting WT1, providing an option for post-transplant allogeneic immune cell therapy or as an off-the-shelf product, to prevent relapse and improve the clinical outcome of children with AML.


Asunto(s)
Antineoplásicos , Leucemia Mieloide Aguda , Humanos , Niño , Linfocitos T CD8-positivos , Sistemas CRISPR-Cas/genética , Sangre Fetal , Receptores de Antígenos de Linfocitos T/genética , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/terapia , Línea Celular Tumoral , Recurrencia
15.
J Immunother Cancer ; 12(4)2024 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-38609316

RESUMEN

BACKGROUND: Autologous stem cell transplantation (ASCT) after induction therapy improves disease-free survival for patients with multiple myeloma (MM). While the goal of ASCT is to render a minimal disease state, it is also associated with eradication of immunosuppressive cells, and we hypothesize that early introduction of immunotherapy post-ASCT may provide a window of opportunity to boost treatment efficacy. METHODS: We conducted a phase 1 clinical trial to investigate the application of autologous lymphocyte infusion and anti-SLAMF7 monoclonal antibody, elotuzumab, after ASCT in patients with newly diagnosed MM previously treated with induction therapy. In addition to CD34+ stem cells, peripheral blood mononuclear cells were harvested prior to transplant and infused on day 3 after stem cell infusion to accelerate immune reconstitution and provide autologous natural killer (NK) cells that are essential to the mechanism of elotuzumab. Elotuzumab was administered starting on day 4 and then every 28 days after until 1 year post-ASCT. Cycles 4-12 were administered with standard-of-care lenalidomide maintenance. RESULTS: All subjects were evaluated for safety, and 13 of 15 subjects completed the treatment protocol. At 1 year post-ASCT, the disease status of enrolled subjects was as follows: five stringent complete responses, one complete response, six very good partial responses, one partial response, and two progressive diseases. The treatment plan was well tolerated, with most grade 3 and 4 AEs being expected hematologic toxicities associated with ASCT. Correlative analysis of the immune microenvironment demonstrated a trend toward reduced regulatory T cells during the first 3 months post-transplant followed by an increase in NK cells and monocytes in patients achieving a complete remission. CONCLUSIONS: This phase 1 clinical trial demonstrates that early introduction of immunotherapy after ASCT is well tolerated and shows promising disease control in patients with MM, accompanied by favorable changes in the immune microenvironment. TRIAL REGISTRATION NUMBER: NCT02655458.


Asunto(s)
Anticuerpos Monoclonales Humanizados , Trasplante de Células Madre Hematopoyéticas , Mieloma Múltiple , Humanos , Lenalidomida/uso terapéutico , Mieloma Múltiple/tratamiento farmacológico , Leucocitos Mononucleares , Trasplante Autólogo , Trasplante de Células Madre , Microambiente Tumoral
16.
Ann Lab Med ; 44(5): 446-449, 2024 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-38449380

RESUMEN

The term "multiple primary (MP) cancers" refers to the existence of more than one cancer in the same patient. The combination of MP cancers with hematological malignancies is relatively uncommon. In this study, we present five patients diagnosed with MP cancers concomitant with hematological malignancies. We comprehensively analyzed their clinical characteristics, cytogenetic profiles, and germline and somatic variants. As first primaries, two patients had solid cancer not followed by cytotoxic therapy and three had hematologic cancer, followed by cytotoxic therapy. The second primaries were all hematologic malignancies that did not meet the criteria for therapy-related myeloid neoplasm. Notably, two (40%) out of the five patients harbored pathogenic potential/presumed germline variants in cancer predisposition genes. Therefore, germline variant testing should be considered when MP cancers with hematological malignancies require consideration for related donor stem cell transplantation.


Asunto(s)
Predisposición Genética a la Enfermedad , Mutación de Línea Germinal , Neoplasias Hematológicas , Neoplasias Primarias Múltiples , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Hematológicas/genética , Neoplasias Hematológicas/diagnóstico , Neoplasias Hematológicas/complicaciones , Neoplasias Primarias Múltiples/genética , Neoplasias Primarias Múltiples/diagnóstico , Neoplasias Primarias Múltiples/patología
17.
Eur J Oncol Nurs ; 70: 102571, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38547745

RESUMEN

PURPOSE: This study aims to identify the factors influencing psychosocial adjustment and its subdomains. METHODS: A descriptive cross-sectional study was conducted with 176 young adults (men 55.7%, 30.5 ± 5.9 years) diagnosed with a hematologic malignancy in South Korea. Psychological adjustment, symptom experience, and type D personality were assessed using self-report questionnaires. Clinical characteristics were extracted from the medical record. Stepwise multiple regression was conducted to identify the factors influencing psychosocial adjustment. RESULTS: The predictors of difficulties in psychosocial adjustment were high symptom experience, type D personality, being unemployed, low functional status, and short time since the last chemotherapy. By subdomain of psychosocial adjustment, predictors of low healthcare orientation were high symptom experience, woman, and type D personality, and predictors of low vocational environment were high symptom experience, being unemployed, short duration of disease, low functional status, and diagnosis. The factors influencing low domestic environment were high symptom experience, being unemployed, and low functional status, and the factor influencing low sexual relationships was high symptom experience. The predictor of low extended family relationships was high symptom experience; predictors of low social environment were high symptom experience and short duration of disease; and predictors of low psychological distress were high symptom experience, type D personality, and being unemployed. CONCLUSION: As young adults with higher symptom experiences, type D personality, low functional status, and shorter time since the last chemotherapy, and who are unemployed experience difficulties in psychosocial adjustment, healthcare professionals should evaluate their psychosocial adjustment and develop strategies to improve the same.


Asunto(s)
Adaptación Psicológica , Neoplasias Hematológicas , Humanos , Femenino , Estudios Transversales , Masculino , Adulto , Neoplasias Hematológicas/psicología , Neoplasias Hematológicas/terapia , República de Corea , Adulto Joven , Encuestas y Cuestionarios , Ajuste Emocional , Personalidad Tipo D
18.
Farm Hosp ; 48(3): T108-T115, 2024.
Artículo en Inglés, Español | MEDLINE | ID: mdl-38461113

RESUMEN

OBJECTIVE: We aimed to develop of a risk stratification model for the pharmaceutical care (PC) of patients with solid or hematologic neoplasms who required antineoplastic agents or supportive treatments. METHOD: The risk stratification model was collaboratively developed by oncology pharmacists from the Spanish Society of Hospital Pharmacy (SEFH). It underwent refinement through three workshops and a pilot study. Variables were defined, grouped into four dimensions, and assigned relative weights. The pilot study collected and analyzed data from participating centers to determine priority levels and evaluate variable contributions. The study followed the Kaiser Permanente pyramid model, categorizing patients into three priority levels: Priority 1 (intensive PC, 90th percentile), Priority 2 (60th-90th percentiles), and Priority 3 (60th percentile). Cut-off points were determined based on this stratification. Participating centers recorded variables in an Excel sheet, calculating mean weight scores for each priority level and the total risk score. RESULTS: The participants agreed to complete a questionnaire that comprised 22 variables grouped into 4 dimensions: demographic (maximum score =11); social and health variables and cognitive and functional status (maximum = 19); clinical and health services utilization (maximum = 25); and treatment-related (maximum = 41). From the results of applying the model to the 199 patients enrolled, the cutoff points for categorization were 28 or more points for priority 1, 16 to 27 points for priority 2 and less than 16 for priority 3; more than 80% of the total score was based on the dimensions of 'clinical and health services utilization' and 'treatment-related'. Interventions based on the pharmaceutical care model were recommended for patients with solid or hematological neoplasms, according to their prioritization level. CONCLUSION: This stratification model enables the identification of cancer patients requiring a higher level of pharmaceutical care and facilitates the adjustment of care capacity. Validation of the model in a representative population is necessary to establish its effectiveness.


Asunto(s)
Antineoplásicos , Neoplasias Hematológicas , Humanos , Neoplasias Hematológicas/tratamiento farmacológico , Medición de Riesgo , Proyectos Piloto , Antineoplásicos/uso terapéutico , Servicio de Farmacia en Hospital/organización & administración , Neoplasias/tratamiento farmacológico , Femenino , Masculino , España , Servicios Farmacéuticos , Encuestas y Cuestionarios , Anciano , Persona de Mediana Edad
19.
Leuk Lymphoma ; 65(7): 997-1002, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38498769

RESUMEN

Corynebacterium is generally considered a contaminant in clinical practice. However, it may cause bacteremia in patients with hematologic disorders, and factors that contribute to its mortality are unclear. A case series and systematic literature review identified 96 cases of Corynebacterium bacteremia inhematologic disorderpatients. The median age was 50.5 years (range: 2-93 years), with 79 (82%) patients 18 years or older, and 64 (67%) patients male. Most cases involved hematologic malignancies, and neutropenia was observed in approximately 75% cases. The most common sites of infection/symptoms were skin and soft tissue, respiratory, and catheter-related bloodstream infection. The infection-related mortality was 23%, and univariate analysis showed that age, respiratory infection/symptoms, and source control were significantly associated with infection-related mortality. Multivariate analysis indicates that infection-related mortality was significantly reduced by source control (OR: 0.24, 95% CI: 0.06-0.97, p = 0.046). Therefore, when Corynebacterium infections are suspected, early source control should be considered.


Asunto(s)
Bacteriemia , Infecciones por Corynebacterium , Corynebacterium , Enfermedades Hematológicas , Humanos , Bacteriemia/microbiología , Bacteriemia/diagnóstico , Bacteriemia/etiología , Infecciones por Corynebacterium/complicaciones , Infecciones por Corynebacterium/diagnóstico , Infecciones por Corynebacterium/microbiología , Corynebacterium/aislamiento & purificación , Anciano , Adulto , Persona de Mediana Edad , Anciano de 80 o más Años , Masculino , Adolescente , Enfermedades Hematológicas/complicaciones , Enfermedades Hematológicas/microbiología , Adulto Joven , Femenino , Niño , Preescolar , Factores de Riesgo
20.
Cureus ; 16(2): e54714, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38523951

RESUMEN

Leukemia is the most common childhood malignancy and often presents with nonspecific symptoms. Occasionally, it presents with extramedullary manifestations, which have been more frequent in cases of myeloid lineage or T cells. However, precursor B-cell leukemia/lymphoblastic lymphoma can also have extramedullary manifestations in some patients. Describing certain clinical features along with diagnostic imaging can establish a presentation pattern and suggest a diagnosis in the pediatric population. Herein, we present a series of four patients with extramedullary manifestations of B-cell lymphoblastic leukemia, describing their clinical imaging and histopathological characteristics.

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