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1.
J Contemp Brachytherapy ; 15(1): 9-14, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36970438

RESUMO

Purpose: High-dose-rate electronic brachytherapy (eBx) is a non-surgical treatment option for non-melanoma skin cancer (NMSC) patients. This study assessed long-term effectiveness and safety of eBx for the treatment of NMSC. Material and methods: A chart review was conducted to identify subjects who had five or more years since their last eBx treatment fraction. Subjects meeting these criteria were contacted to determine their interest in participating in a long-term follow-up study. Those who agreed, underwent a follow-up visit where consent was obtained, and their lesions were clinically assessed for recurrence and long-term skin toxicities. History and demographic data were retrospectively collected, and treatment method was verified. Results: 183 subjects with 185 lesions were enrolled into this study at four dermatology centers in two practices in California. Three subjects in the analysis were less than 5 years from the last treatment to follow-up visit. All lesions were stage 1 basal cell carcinoma, squamous cell carcinoma, or squamous cell carcinoma in situ. Recurrence rate for the 183 subjects was 1.1%. Long-term skin toxicities were reported in 70.0% of the subjects. Hypopigmentation grade 1 was observed in 65.9% of the lesions, telangiectasia grade 1 was seen in 22.2%, scarring grade 1 in two subjects (1.1%), hyperpigmentation grade 1 in two subjects (1.1%), and induration grade 2 in one patient (0.5%). The induration grade 2 was located on the upper back and did not limit instrumental activities of daily living (ADLs). Conclusions: Electronic brachytherapy for the treatment of non-melanoma skin cancer is safe and effective, showing excellent long-term 98.9% local control through a median follow-up of 7.6 years (n = 183), with minimal long-term toxicities.

2.
Hematol Oncol Stem Cell Ther ; 16(2): 158-161, 2023 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-34562406

RESUMO

OBJECTIVE/BACKGROUND: Baseline neutrophil/lymphocyte ratio (NLR), a surrogate marker for systemic inflammation and immunosuppression, is a well-studied prognostic marker in non-small cell lung cancer (NSCLC). This study tests if interim NLR is prognostic in NSCLC patients in remission. METHODS: This single-center, retrospective cohort study analyzed 131 NSCLC patients treated from 2010 to 2015 who achieved complete remission. NLR was calculated at baseline and from the first available blood sample during remission. Kaplan-Meier estimates of overall survival (OS) and time to recurrence were compared using the log-rank test for trend. Multivariable analysis was conducted using the Cox proportional hazards model. RESULTS: Of the 131 cases, 63 had subsequently recurred at the last follow-up. The mean age was 64 ± 10 years. Patients with stage I (35%), II (24%), and III (41%) were included. Histology were adenocarcinoma (60%), squamous cell (33%), and unspecified (7%). The majority of patients were smokers. For the univariate analysis interim NLR was binned into tertiles, NLR < 2, 2-4.08, and > 4.08. Of those with an interim NLR > 4.08, prognosis and recurrence risk were higher. In the multivariable analysis, remission NLR was strongly prognostic for OS ( p < .001) as did patient's age ( p = .002), but not stage, race, sex, and baseline NLR. CONCLUSIONS: Our study found that interim NLR, obtained in remission, was strongly prognostic for OS and recurrence.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Pessoa de Meia-Idade , Idoso , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/patologia , Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Neutrófilos/patologia , Estudos Retrospectivos , Linfócitos/patologia , Prognóstico , Recidiva
3.
JCO Clin Cancer Inform ; 6: e2100135, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35584337

RESUMO

PURPOSE: Although hematologic malignancies affect adults of all ages, few data exist on the real-world patterns of care for patients younger than 65 years in the United States. Understanding patterns of care from diagnosis through relapsed disease may provide insight about care across community and academic centers. We used a large statewide claims database to describe the path of Hodgkin lymphoma (HL) treatment among adults age < 65 years at diagnosis. METHODS: We defined a cohort of commercially insured patients with HL who underwent hematopoietic stem-cell transplantation (HSCT) from 2009 to 2013 in the Massachusetts All-Payer Claims Database (APCD). The primary goals of our study were to accurately identify patients and their treatment patterns who had relapsed/refractory HL and underwent HSCT. We also characterized time to treatment failure and overall survival. RESULTS: A total of 7,613 patients had International Classification of Diseases, Ninth Revision, diagnostic codes for HL. From our algorithm, we identified 117 patients as part of the final cohort who underwent autologous and/or allogeneic HSCT. Median age was 39.0 years and 50.4% were female. Initial therapy was identified for 68 of the 117 patients (58.1%). Most (> 74.4%) of the identified transplants were autologous, and 19 patients (16.2%) underwent allogeneic transplant, with or without prior autologous transplant. Of the 68 patients with initial therapy data, the median time to HSCT after completion of initial treatment was 223.5 days (Q1 = 151.5, Q3 = 414.5). CONCLUSION: We used the Massachusetts APCD to create a cohort of patients age < 65 years with relapsed/refractory HL. Our findings support the use of APCD for the large-scale analysis of patient characteristics, treatment patterns, and outcomes for young adult patients with hematologic malignancies.


Assuntos
Neoplasias Hematológicas , Transplante de Células-Tronco Hematopoéticas , Doença de Hodgkin , Adulto , Idoso , Feminino , Doença de Hodgkin/diagnóstico , Doença de Hodgkin/epidemiologia , Doença de Hodgkin/terapia , Humanos , Masculino , Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/terapia , Transplante Autólogo , Estados Unidos/epidemiologia , Adulto Jovem
4.
Am J Hosp Palliat Care ; 39(2): 164-168, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34002623

RESUMO

BACKGROUND: Timely identification of palliative care needs can reduce hospitalizations and improve quality of life. The Supportive & Palliative Care Indicators Tool (SPICT) identifies patients with advanced medical conditions who may need special care planning. The Rothman Index (RI) detects patients at high risk of acutely decompensating in the inpatient setting. SPICT and RI among cancer patients were utilized in this study to evaluate their potential roles in palliative care referrals. METHODS: Advanced cancer patients admitted to an institution in Baltimore, Maryland in 2019 were retrospectively reviewed. Patient demographics, length of hospital stay (LOS), palliative care referrals, RI scores, and SPICT scores were obtained. Patients were divided into SPICT positive or negative and RI > 60 or RI < 60.Unpaired t-tests and chi-square tests were utilized to determine the associations between SPICT and RI and early palliative care needs and mortality. RESULTS: 227 patients were included, with a mean age of 68 years, 63% Black, 59% female, with the majority having lung and GI malignancies. Sixty percent were SPICT +, 21% had RI < 60. SPICT + patients were more likely to have RI < 60 (p = 0.001). SPICT + and RI < 60 patients were more likely to have longer LOS, change in code status, more palliative/hospice referrals, and increased mortality (p <0.05). CONCLUSIONS: SPICT and RI are valuable tools in predicting mortality and palliative/hospice care referrals. These can also be utilized to initiate early palliative and goals of care discussions in patients with advanced cancer.


Assuntos
Neoplasias , Cuidados Paliativos , Idoso , Feminino , Humanos , Masculino , Neoplasias/terapia , Psicometria , Qualidade de Vida , Encaminhamento e Consulta , Estudos Retrospectivos
5.
Tetrahedron Lett ; 1042022 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-38584726

RESUMO

The total syntheses of three structurally related natural products, deoxyalpinoid B, deoxyalpinoid A, and alpinoid F, are reported, and each features a Au(I)-catalyzed Meyer-Schuster rearrangement as the key step. The synthesis of alpinoid F is reported for the first time. The syntheses of these natural products, all of which exhibit potent anticancer activity, are readily amenable to the preparation of structural analogs.

6.
Case Rep Oncol ; 14(3): 1366-1372, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34720943

RESUMO

Myeloid sarcoma (MS) is a rare extramedullary manifestation of acute myelogenous leukemia (AML). The mass is composed of primitive myeloid cells that can occur in a variety of organs, most commonly the skin, lymph nodes, GI tract, bone, breast, and CNS. Involvement of the genitourinary tract is rare. Consensus on treatment of MS has not been established, but management typically involves systemic therapy, such as chemotherapy or allogeneic hematopoietic stem cell transplant as well as palliative local therapies such as radiation or surgery. Outcomes of MS using novel AML therapies, such as BCL-2 inhibitors or IDH inhibitors, remain undescribed. We describe a rare case of a 70-year-old man presenting with MS of the urinary bladder complicating known secondary AML (RUNX1 and IDH2 mutated). Prior to development of bladder MS, the patient had received decitabine, enasidenib, and venetoclax. Following diagnosis, he was treated with cytarabine and venetoclax. To our knowledge, this is the first case of bladder MS treated with a BCL-2 inhibitor.

7.
Arch Environ Contam Toxicol ; 81(2): 236-254, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34331106

RESUMO

Fish contaminant studies with human health protection objectives typically focus on muscle tissue, recognizing that fillets are the commonly consumed tissue fraction. Muscle biopsy punch sampling for mercury analysis has recently been used as an alternative to harvesting fish for fillets; however, there is limited information comparing fillet plug results to whole fillet results. This study was conducted to address that data gap and to test the applicability of plugs for monitoring associated with United States Environmental Protection Agency's fish tissue-based mercury and selenium water quality criteria. The mercury phase included 300 fillet homogenates and 300 field-extracted plug samples from 60 fish, and the selenium phase included 120 fillet homogenates and 120 plugs from 30 fish. Both phases showed that there were no statistically significant differences between fillet plug and homogenized fillet results at the community level; however, a selenium plug monitoring alternative must employ a sufficiently sensitive analytical method and consider total solids. Plug and fillet sampling alternatives have inherent advantages and disadvantages. Fillet sampling provides sufficient mass to consider multiple contaminants but requires fish to be harvested. Plug sampling only provides adequate mass for a single analyte but may allow fish survival, although additional research is needed on survival following plug removal.


Assuntos
Mercúrio , Selênio , Poluentes Químicos da Água , Animais , Biópsia , Monitoramento Ambiental , Peixes , Humanos , Mercúrio/análise , Músculos/química , Estados Unidos , Poluentes Químicos da Água/análise
8.
Case Rep Hematol ; 2021: 5580823, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33859850

RESUMO

Autoimmune hemolytic anemia (AIHA) is related to an underlying condition in an estimated 50 to 60%, while the remaining is idiopathic, as a result of a combination of immune activation, deficiency, or dysregulation. AIHA is associated with viral infections, autoimmune disorders, immunodeficiencies, lymphoproliferative disorders, and pregnancy. AIHA has predictive properties and may be a harbinger of future lymphoproliferative disorders in up to 20% of AIHA cases. Autoimmune hemolytic anemia (AIHA) has been associated with lymphoproliferative disorders particularly chronic lymphocytic leukemia and non-Hodgkin lymphoma. Rarely is it seen in Hodgkin disease. In the following report, we describe the presentation of AIHA, ultimately resulting in the diagnosis of nodular sclerosis Hodgkin lymphoma (stage III). From the limited reports and reviews available, it is understood that advanced Hodgkin (stage III or IV) of nodular sclerosis (NS) or mixed cellularity (MC) types portend a stronger affiliation to AIHA. The majority of AIHA-associated Hodgkin lymphoma presents as stage III or IV disease with the hemolysis being the presenting symptom, as in this case. The mainstay of AIHA therapy has been corticosteroids; however, this first-line regimen appears to be less effective when treating AIHA in the setting of HL. The exact mechanism of AIHA related to HL is unclear, and it may be thought to be that tumor cell produced autoantibodies. Other hypotheses include paraneoplastic phenomena or more, perhaps immunity to tumor cells may cross-react with antigens on the red cells. Although these mechanisms require further investigation, the relationship of the AIHA and HL represents a piece to a larger puzzle between autoimmune disorders and lymphoproliferative conditions.

9.
Cancer Med J ; 4(2): 52-59, 2021 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-32685937

RESUMO

Patients who develop one primary neoplasm are at increased risk for second cancers. Chemotherapeutic agents can result in DNA damage leading to clonal hematopoiesis, thereby causing myelodysplastic syndrome (MDS). Alkylating agents and topoisomerase inhibitors are most frequently implicated in therapy-related MDS. We report four patients with gastropancreatic malignancies (two with pancreatic adenocarcinoma and two with gastric adenocarcinoma) who developed MDS during or after the treatment of their primary gastrointestinal (GI) malignancies. Two of these patients were diagnosed with MDS during maintenance therapy with ramucirumab. To our knowledge, development of MDS in association with ramucirumab has not been previously reported in the literature. Our findings also suggest that with continued improvement in survival of patients with GI and pancreatic malignancies, more cases of treatment-related MDS might be identified.

10.
Neuron ; 108(6): 1181-1193.e8, 2020 12 23.
Artigo em Inglês | MEDLINE | ID: mdl-33301712

RESUMO

Context guides perception by influencing stimulus saliency. Accordingly, in visual cortex, responses to a stimulus are modulated by context, the visual scene surrounding the stimulus. Responses are suppressed when stimulus and surround are similar but not when they differ. The underlying mechanisms remain unclear. Here, we use optical recordings, manipulations, and computational modeling to show that disinhibitory circuits consisting of vasoactive intestinal peptide (VIP)-expressing and somatostatin (SOM)-expressing inhibitory neurons modulate responses in mouse visual cortex depending on similarity between stimulus and surround, primarily by modulating recurrent excitation. When stimulus and surround are similar, VIP neurons are inactive, and activity of SOM neurons leads to suppression of excitatory neurons. However, when stimulus and surround differ, VIP neurons are active, inhibiting SOM neurons, which leads to relief of excitatory neurons from suppression. We have identified a canonical cortical disinhibitory circuit that contributes to contextual modulation and may regulate perceptual saliency.


Assuntos
Inibição Neural/fisiologia , Neurônios/metabolismo , Córtex Visual/fisiologia , Vias Visuais/fisiologia , Percepção Visual/fisiologia , Animais , Cálcio/metabolismo , Camundongos , Modelos Neurológicos , Estimulação Luminosa , Somatostatina/metabolismo , Peptídeo Intestinal Vasoativo/metabolismo , Córtex Visual/metabolismo , Vias Visuais/metabolismo
11.
J Wound Care ; 29(10): 556-561, 2020 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-33052788

RESUMO

OBJECTIVE: Most cutaneous squamous cell carcinomas (cSCC) are low risk and can be treated with simple excision or ablation. High-risk cSCC require invasive treatment, including radical surgery. We present our experience in treating invasive cSCC of the pelvis and extremities. METHOD: A retrospective review of the data of patients with invasive cSCC, indicated for surgery between 2014 and 2018, from a single institution was carried out. RESULTS: A total of 19 patients (nine men, 10 women) were included in the study. Mean age was 62 years; mean tumour size was 8.6cm). Of the 19 patients, five patients with paraplegia with cSCC arising from hard-to-heal ulcers died of infection or bleeding after surgery or systemic therapy. Also, nine patients with localised cSCC underwent margin-negative resection with or without radiation; one patient experienced disease relapse. Of the participants, two patients with previous transplants and multifocal aggressive cSCC underwent numerous resections but succumbed to disease, and two patients who presented with locally recurrent disease after previous positive margin resection and radiation underwent re-resection but developed recurrent disease. CONCLUSIONS: Prognosis for invasive cSCC largely depends on clinical setting. Tumours arising from ulcers in patients with paraplegia have a poor prognosis regardless of treatment. Invasive cSCC in transplant patients are often multifocal and often recur. Debulking procedures are associated with local recurrence despite radiation. Patients presenting with localised disease have a favourable prognosis with wide resection, flap coverage and adjuvant therapy.


Assuntos
Carcinoma de Células Escamosas/patologia , Neoplasias Cutâneas/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/epidemiologia , Carcinoma de Células Escamosas/terapia , Derme , Feminino , Humanos , Masculino , Maryland/epidemiologia , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Estadiamento de Neoplasias , Estudos Retrospectivos , Fatores de Risco , Neoplasias Cutâneas/epidemiologia , Neoplasias Cutâneas/terapia , Resultado do Tratamento
12.
Cureus ; 12(6): e8575, 2020 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-32670711

RESUMO

Hyperprogression associated with immunotherapy has been reported previously with melanoma, non-small cell lung cancer (NSCLC), renal, and urothelial cancers but not with sarcoma. A 63-year old man with a biopsy-proven, localized 13 cm high-grade myxoid/round cell liposarcoma of the thigh was treated with concurrent, neoadjuvant checkpoint inhibitor immunotherapy and radiotherapy. After his subsequent wide surgical resection, he developed small hepatic lesions that rapidly progressed and caused his death, raising the possibility of hyperprogression in this entity.

13.
Transfusion ; 60(8): 1867-1872, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32654201

RESUMO

BACKGROUND: Extracorporeal photopheresis (ECP) is an immunomodulatory cellular therapy which has been shown to induce a tolerogenic state in patients with acute and chronic graft-vs-host disease. ECOG-ACRIN explored the activity of ECP as a part of a reduced intensity conditioning regimen in two multicenter trials in patients with MDS (E1902) and lymphomas (E1402). While both studies closed before completing accrual, we report results in 23 patients (17 MDS and 6 lymphoma). STUDY DESIGN AND METHODS: Patients received 2 days of ECP followed by pentostatin 4 mg/m2 /day for two consecutive days, followed by 600 cGy of total body irradiation prior to stem cell infusion. Immunosuppression for aGVHD was infusional cyclosporine A or tacrolimus and methotrexate on day +1, +3, with mycophenolate mofetil starting on day 100 for chronic GVHD prophylaxis. RESULTS: All patients engrafted, with median time to neutrophil and platelet engraftment of 15-18 days and 10-18 days respectively. Grade 3 or 4 aGVHD occurred in 13% and chronic extensive GVHD in 30%. CONCLUSIONS: These studies demonstrate that ECP/pentostatin/TBI is well tolerated and associated with adequate engraftment of neutrophils and platelets in patients with lymphomas and MDS.


Assuntos
Doença Enxerto-Hospedeiro/prevenção & controle , Transplante de Células-Tronco Hematopoéticas , Linfoma/terapia , Síndromes Mielodisplásicas/terapia , Fotoferese , Condicionamento Pré-Transplante , Irradiação Corporal Total , Adulto , Aloenxertos , Ciclosporina/administração & dosagem , Feminino , Humanos , Masculino , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Pentostatina/administração & dosagem , Tacrolimo/administração & dosagem
14.
J Knee Surg ; 33(9): 875-883, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31096280

RESUMO

Given that pain relief is often the primary goal of orthopaedic surgery, an accurate assessment of pain is paramount. The objectives of this cross-sectional analytical study were to (1) compare how the Patient-Reported Outcomes Measurement Information System (PROMIS) pain interference (PI) computer adaptive test (CT) performs against the Numeric Pain Scale (NPS) measure in evaluating pain, and (2) to determine demographic, clinical, and psychosocial correlates of PI in an urban population undergoing a variety of knee surgeries. We hypothesized that there would be a strong correlation between PI and NPS, with minimal floor and ceiling effects; and that a worse PI score would be associated with a worse general health profile. The sample consisted of 412 patients undergoing knee surgery at an urban academic center. Patients were preoperatively administered measures of health-related quality of life (HRQOL). Bivariate and multivariable statistical analyses were performed to identify significant independent predictors. The mean PI score was 60.3 ± 7.2 and had no floor or ceiling effects, whereas NPS demonstrated a greater percentage of patients scoring at the extremes of the measure. Worse PI scores were associated with older age, higher body mass index (BMI), greater comorbidity, lower income, smoking, female gender, Hispanic ethnicity, Black race, unemployment, opioid use, lower expectations, and greater American Society of Anesthesiologists score (p < 0.05). Compared with other procedures, total knee arthroplasty was associated with worse PI scores and anterior cruciate ligament reconstruction was associated with better PI scores. Furthermore, PI demonstrated significant associations with a wide range of HRQOL measures. After controlling for confounding variables, worse PI was independently associated with older age, lower income, higher BMI, and smoking.


Assuntos
Articulação do Joelho/cirurgia , Medição da Dor , Medidas de Resultados Relatados pelo Paciente , Adulto , Fatores Etários , Analgésicos Opioides/efeitos adversos , Índice de Massa Corporal , Comorbidade , Estudos Transversais , Feminino , Humanos , Renda , Masculino , Período Pré-Operatório , Fatores Raciais , Fatores Sexuais , Fumar , Desemprego
15.
Oncol Nurs Forum ; 46(5): 572-584, 2019 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-31424456

RESUMO

OBJECTIVES: To evaluate an interactive electronic Cancer Survivorship Patient Engagement Toolkit (CaS-PET) using a single-group pre-/post-test design. SAMPLE & SETTING: 30 cancer survivors with a mean age of 56.5 years (SD = 13.6) were recruited from the University of Maryland Medical Center in Baltimore. METHODS & VARIABLES: CaS-PET was designed to deliver survivorship care plans (SCPs) with multifactorial support and comprised of SCPs, biweekly follow-up using patient portal e-messages, and online resources. Outcomes included health-related quality of life, symptom burden, impact of cancer, fear of recurrence, physical activities, dietary behavior, patient-provider communication, adherence to treatment, and e-health literacy. RESULTS: At three months, there was a significant improvement in quality of life, physical symptom burden, and total symptom burden. IMPLICATIONS FOR NURSING: Findings suggest an excellent potential for using CaS-PET for survivors who are in transition from treatment to survivorship.


Assuntos
Sobreviventes de Câncer , Educação a Distância , Educação de Pacientes como Assunto , Participação do Paciente , Sobrevivência , Ansiedade , Atitude Frente a Saúde , Recursos Audiovisuais , Sobreviventes de Câncer/psicologia , Depressão , Gerenciamento Clínico , Medo , Letramento em Saúde , Humanos , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Cooperação do Paciente , Portais do Paciente , Projetos Piloto , Relações Profissional-Paciente , Qualidade de Vida , Avaliação de Sintomas
16.
J Oral Maxillofac Surg ; 77(10): 1965-1966, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31158345
18.
Eurasian J Med Oncol ; 3(3): 182-185, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-32104790

RESUMO

OBJECTIVES: There is a wide variability in the pharmacokinetics, pharmacodynamics and tolerance of anticancer drugs based on ethnicity. GIST is a rare cancer, (~1% of GI cancers). Imatinib is used in the neo-adjuvant, adjuvant and metastatic setting. The purpose of this study was to report the difference in hematologic toxicities to imatinib among different ethnicities when treated for GIST either in the adjuvant or metastatic setting. METHODS: We performed a retrospective study to collect data on patients with GIST (in any stage), who were on imatinib and presenting with grade 2 or more anemia, neutropenia and/or thrombocytopenia from July 1, 2005 to January 31, 2018. The degree of cytopenia was graded as per National Cancer Institute Common Toxicity criteria; version 4.0. We collected included age, gender, ethnicity, pathology, adverse effects-hematologic and non-hematologic, management of toxicities including dose modifications and administration of pegfilgrastim. RESULTS: Among 57 patients (median age 61 years, M: F=41:16 (F); ethnicities: White 65%, African-American (AA 19%, Asian 12% and Hispanic 4%), neutropenia (Grade 3 & 4) was seen in 6 patients (10%): 5 AA and 1 Asian. 45% of all AA patients developed neutropenia. Median absolute neutrophil count (ANC) nadir was 700/µL, median duration on drug prior to onset of neutropenia was 4.5 weeks and median duration of neutropenia was 4 weeks. One patient developed febrile neutropenia. Dose interruptions were needed in 3, dose-reductions in all patients, and 3 patients required pegfilgrastim. One patient had to discontinue imatinib, while one patient was escalated back to 400mg daily dose. CONCLUSION: This is the first study to examine ethnic variations in myelosuppression following imatinib in patients with GIST.

19.
Bone Marrow Transplant ; 54(4): 560-566, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30127467

RESUMO

The risk of late complications including secondary malignancies is increased in long-term survivors of allogeneic hematopoietic stem cell transplants (HSCT). There is limited literature on the biological behavior and clinical features of squamous cell carcinoma (SCC) of head and neck post-HSCT. We present the clinical and pathologic characteristics on six patients who were diagnosed with SCC while in remission following an allogeneic HSCT. Median follow-up was 8 years. Five patients (83%) developed SCC of tongue and one developed esophageal SCC. Five patients had oral chronic graft-versus-host disease (cGvHD). The conventional risk factors of alcohol, tobacco, and human papillomavirus were absent. The most common presenting finding was the new-onset focal oral pain and ulcerated plaques clinically indistinguishable from a flare of their oral cGvHD lesions. We demonstrated that the SCC in three patients was of donor origin.


Assuntos
Neoplasias Hematológicas/complicações , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Carcinoma de Células Escamosas de Cabeça e Pescoço/terapia , Condicionamento Pré-Transplante/efeitos adversos , Transplante Homólogo/efeitos adversos , Feminino , Neoplasias Hematológicas/mortalidade , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Masculino , Carcinoma de Células Escamosas de Cabeça e Pescoço/mortalidade , Condicionamento Pré-Transplante/métodos , Transplante Homólogo/métodos
20.
Genetics ; 210(3): 925-946, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30401764

RESUMO

Dense core vesicles (DCVs) can transmit signals by releasing neuropeptides from specialized synaptic regions called active zones. DCVs reach the active zone by motorized transport through a long axon. A reverse motor frequently interrupts progress by taking DCVs in the opposite direction. "Guided transport" refers to the mechanism by which outward movements ultimately dominate to bring DCVs to the synaptic region. After guided transport, DCVs alter their interactions with motors and enter a "captured" state. The mechanisms of guided transport and capture of DCVs are unknown. Here, we discovered two proteins that contribute to both processes in Caenorhabditis elegans SAD kinase and a novel conserved protein we named Sentryn are the first proteins found to promote DCV capture. By imaging DCVs moving in various regions of single identified neurons in living animals, we found that DCV guided transport and capture are linked through SAD kinase, Sentryn, and Liprin-α. These proteins act together to regulate DCV motorized transport in a region-specific manner. Between the cell body and the synaptic region, they promote forward transport. In the synaptic region, where all three proteins are highly enriched at active zones, they promote DCV pausing by inhibiting transport in both directions. These three proteins appear to be part of a special subset of active zone-enriched proteins because other active zone proteins do not share their unique functions.


Assuntos
Proteínas de Caenorhabditis elegans/metabolismo , Caenorhabditis elegans/citologia , Caenorhabditis elegans/enzimologia , Proteínas do Tecido Nervoso/metabolismo , Proteínas Serina-Treonina Quinases/metabolismo , Vesículas Secretórias/metabolismo , Animais , Axônios/metabolismo , Transporte Biológico , Caenorhabditis elegans/genética , Caenorhabditis elegans/metabolismo , Dineínas/metabolismo , Mutação
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