Publications by authors named "Arunkumar Modi"

Prompt evaluation and genetic testing of patients who present with recurrent and recalcitrant warts, before onset of severe infection or myelodysplastic syndrome, leads to improved outcomes in patients with GATA2 deficiency.

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Thrombopoietin receptor agonists (TPO-RAs) induce trilineage hematopoiesis under conditions with acquired hematopoietic failure. We evaluated safety, tolerability, and preliminary efficacy of a TPO-RA, romiplostim (Nplate), with or without standard-of-care immunosuppressive therapy (±IST) for children (ages < 21 y) with newly diagnosed and relapsed/refractory severe aplastic anemia (SAA) and myelodysplastic syndrome (MDS). Data were collected from an observational study and a single arm interventional pilot study.

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Objective: Examine the influence of household income on health-related quality of life (HRQOL) among children with newly diagnosed acute myeloid leukemia (AML).

Design: Secondary analysis of data prospectively collected from pediatric patients receiving treatment for AML at 14 hospitals across the United States.

Exposure: Household income was self-reported on a demographic survey.

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Treatment with tisagenlecleucel (tisa-cel) achieves excellent complete remission rates in children and young adults with relapsed or refractory B cell acute lymphoblastic leukemia (B-ALL), but approximately 50% maintain long-term remission. Consolidative hematopoietic stem cell transplantation (cHSCT) is a potential strategy to reduce relapse risk, but it carries substantial short- and long-term toxicities. Additionally, several strategies for management of B cell recovery (BCR) and next-generation sequencing (NGS) positivity post-tisa-cel exist, without an accepted standard.

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Article Synopsis
  • Bloodstream infections (BSIs) are common and serious for kids with acute myeloid leukemia (AML), often linked to central venous access devices (CVADs) used during treatment.
  • This study analyzed the risk of bacterial BSIs in pediatric AML patients based on different types of CVADs (tunneled externalized catheter, peripherally inserted central catheter, and totally implanted catheter) using data from over 500 patients.
  • Results showed no significant difference in BSI rates among the CVAD types during neutropenia, suggesting that the risk factors for BSIs may be specific to patients with AML rather than the type of CVAD used.
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Hematopoietic cell transplantation (HCT) is the sole curative option for congenital dyserythropoietic anemia (CDA), a rare type of hemolytic anemia characterized by anemia, ineffective erythropoiesis, and secondary hemochromatosis. In this retrospective multicenter study, we report the outcomes of children with CDA who underwent HCT at participating Pediatric Transplantation and Cellular Therapy Consortium centers. Clinical information on HCT and associated outcomes was collected retrospectively using a common questionnaire.

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Background: Recent shifts from radiation to chemotherapy-based treatment for acute lymphoblastic leukemia (ALL) have contributed to reduced long-term morbidity. Despite this, ALL survivors remain at increased risk for long-term cognitive impairments.

Aim: To identify demographic and treatment factors associated with school performance in pediatric survivors of ALL.

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Background: Thromboembolism affects up to 30% of children undergoing treatment for acute lymphoblastic leukemia (ALL). Increased thrombin generation has been reported in ALL, but the mechanisms remain elusive.

Objective: We aimed to show that extracellular traps and cell-free DNA (cfDNA) promote thrombin generation in pediatric ALL.

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Background: Activated phosphoinositide 3-kinase delta syndrome (APDS) is a combined immunodeficiency with a heterogeneous phenotype considered reversible by allogeneic hematopoietic cell transplantation (HCT).

Objectives: This study sought to characterize HCT outcomes in APDS.

Methods: Retrospective data were collected on 57 patients with APDS1/2 (median age, 13 years; range, 2-66 years) who underwent HCT.

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Hematopoietic stem cell transplant (HSCT) is a potentially curative treatment for hematopoietic malignancies, complicated by decreased performance status and quality of life. Exercise therapy improves outcomes in HSCT, but several barriers have prevented exercise from becoming routine clinical practice. Based on existing data that wearable technologies facilitate exercise participation in other sedentary and chronic illness populations, we propose the novel hypothesis that wearable technologies are a valuable tool in transcending barriers and developing exercise therapy programs for HSCT patients.

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Background: Cytarabine is a nucleoside analog used in chemotherapy regimens for the treatment of multiple hematologic malignancies. One of the known adverse effects of cytarabine, particularly in patients receiving high-dose cytarabine (HDAC), is drug-induced fever. Multiple studies have demonstrated an increased risk of viridans group streptococcal bacteremia in patients who have received HDAC.

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Single cases of B- and T-lymphoblastic leukemia/lymphoma occurring after remission of JMML, and JMML occurring after remission of B-lymphoblastic leukemia have been reported in the literature. We present a unique case of a child with concurrent JMML and T-lymphoblastic lymphoma in which an identical missense mutation in NRAS was found in both the neoplastic JMML and T-LBL cells. JMML has been considered a stem cell disorder, and our case provides additional molecular evidence for a stem cell lesion underlying the two different disease phenotypes.

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