Publications by authors named "Seth M Steinberg"

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  • * The study reveals that most ATM-deficient T-LBL cultures have various genomic alterations in the PTEN gene, resulting in the absence of functional PTEN protein and constant activation of AKT signaling.
  • * These lymphomas are sensitive to the AKT inhibitor MK-2206, indicating they rely on pAKT signaling for survival, and this loss of PTEN expression and activation of AKT is not seen in non-cancerous thymocytes.
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  • DOCK8 deficiency is a serious immunodeficiency that can only be treated effectively through allogeneic hematopoietic cell transplantation (HCT), which was tested in a clinical trial using a busulfan-based regimen for its effectiveness and safety.
  • The trial involved 36 patients (mostly children and young adults) and aimed to see if HCT could improve their health and immune system within one year, with many achieving over 98% donor chimerism shortly after treatment.
  • Results showed 80.6% of participants were alive without new complications after a median follow-up of 7.4 years, and the treatment was generally well-tolerated, although some experienced immune system
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Background: In children and adolescents/young adults (CAYA) with neurofibromatosis type I (NF1), associations between anthropometric measurements, plexiform neurofibroma (pNF) tumor volume (TV), and treatment history are unknown.

Methods: We retrospectively investigated anthropometrics in CAYA on the National Cancer Institute (NCI) NF1 Natural History Study who had pNF TV assessed by imaging (n = 106). We determined CDC height/weight percentiles and estimated Preece-Baines (PB) height growth curve parameters.

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Purpose: Cabozantinib and nivolumab (CaboNivo) alone or with ipilimumab (CaboNivoIpi) have shown promising efficacy and safety in patients with metastatic urothelial carcinoma (mUC), metastatic renal cell carcinoma (mRCC), and rare genitourinary (GU) tumors in a dose-escalation phase I study. We report the final data analysis of the safety, overall response rate (ORR), progression-free survival (PFS), and overall survival (OS) of the phase I patients and seven expansion cohorts.

Methods: This is an investigator-initiated, multicenter, phase I trial.

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Background: The identification of oncogenic mutations in diffuse large B-cell lymphoma (DLBCL) has led to the development of drugs that target essential survival pathways, but whether targeting multiple survival pathways may be curative in DLBCL is unknown.

Methods: We performed a single-center, phase 1b-2 study of a regimen of venetoclax, ibrutinib, prednisone, obinutuzumab, and lenalidomide (ViPOR) in relapsed or refractory DLBCL. In phase 1b, which included patients with DLBCL and indolent lymphomas, four dose levels of venetoclax were evaluated to identify the recommended phase 2 dose, with fixed doses of the other four drugs.

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Background: LMB-100 is a mesothelin (MSLN)-targeting recombinant immunotoxin (iTox) carrying a Pseudomonas exotoxin A payload that has shown promise against solid tumors, however, efficacy is limited by the development of neutralizing anti-drug antibodies (ADAs). Tofacitinib is an oral Janus Kinase (JAK) inhibitor that prevented ADA formation against iTox in preclinical studies.

Methods: A phase 1 trial testing LMB-100 and tofacitinib in patients with MSLN-expressing cancers (pancreatic adenocarcinoma, n=13; cholangiocarcinoma, n=1; appendiceal carcinoma, n=1; cystadenocarcinoma, n=1) was performed to assess safety and to determine if tofacitinib impacted ADA formation.

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Chronic graft-versus-host disease (cGVHD) remains a significant problem for patients after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Although in vivo lymphodepletion for cGVHD prophylaxis has been explored in the myeloablative setting, its effects after reduced-intensity conditioning (RIC) are not well described. Patients (N = 83) with hematologic malignancies underwent targeted lymphodepletion chemotherapy followed by a RIC allo-HSCT using peripheral blood stem cells from unrelated donors.

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Background: De-escalation strategies for newly-diagnosed p16-positive oropharyngeal squamous cell carcinoma (p16+ OPSCC), aim to reduce treatment-related morbidity without compromising disease control. One strategy is neoadjuvant cisplatin and docetaxel chemotherapy (NAC + S) before transoral robotic surgery, with pathology-based risk-adapted adjuvant treatment.

Methods: We examined the recurrence-free survival (RFS) for patients who received NAC + S.

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Background: Adrenocortical carcinoma (ACC) commonly metastasizes to the lungs, and pulmonary metastasectomy (PM) is utilized due to limited systemic options.

Methods: All ACC patients with initially only lung metastases (LM) from a single institution constituted this observational case series. Kaplan-Meier and Cox proportional hazard analyses evaluated the association with potential prognostic factors and outcomes.

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Importance: Current reports suggest that the surgeon-scientist phenotype is significantly threatened. However, a significant increase in the proportion of surgeons in the workforce funded by the National Institutes of Health (NIH) from 2010 (0.5%) to 2020 (0.

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Background: Current standard of care for advanced biliary tract cancer (BTC) is gemcitabine, cisplatin plus anti-PD1/PD-L1, but response rates are modest. The purpose of this study was to explore the efficacy and safety of durvalumab (anti-PD-L1) and tremelimumab (anti-CTLA-4), with and without an interventional radiology (IR) procedure in advanced BTC.

Methods: Eligible patients with advanced BTC who had received or refused at least one prior line of systemic therapy were treated with tremelimumab and durvalumab for four combined doses followed by monthly durvalumab alone with and without an IR procedure until the progression of disease or unacceptable toxicity.

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Background: Microsatellite stable colorectal liver metastases (MSS CLM) maintain an immunosuppressive tumor microenvironment (TME). Historically, immune-based approaches have been ineffective. VB-111 (ofranergene obadenovec) is a genetically-modified adenoviral vector targeting the TME; its unique dual mechanism induces an immune response and disrupts neovascularization.

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  • - A new observer disfigurement severity scale was created to evaluate changes in disfigurement from plexiform neurofibromas, focusing on its feasibility, reliability, and validity.
  • - Twenty-eight raters assessed photographs of treated and untreated children with neurofibromas, finding that the average disfigurement scores were similar at the start, but the treated group showed significant improvement after one year.
  • - The results indicated that the scoring system was reliable, with consistent ratings among raters and a moderate correlation between changes in disfigurement scores and tumor volume during treatment.
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  • Patients with relapsed small cell lung cancer (SCLC), known for its poor prognosis, showed some improvement when the drug berzosertib was added to topotecan in a phase 2 study.
  • A randomized clinical trial conducted from December 2019 to December 2022 involved 60 patients who received either topotecan alone or in combination with berzosertib, assessing their outcomes based on progression-free survival (PFS) and overall survival (OS).
  • Results indicated that after a median follow-up of 21.3 months, there was no significant difference in PFS or OS between the two treatment groups, highlighting the challenge in treating relapsed SCLC.
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  • A study evaluated 229 adult patients with chronic graft-versus-host disease (cGVHD) for the prevalence and impact of metabolic syndrome (MetS), finding that 54.1% met the diagnostic criteria for MetS.
  • Patients with higher body mass index and poorer performance status were more likely to have MetS, along with specific inflammatory and kidney function markers indicating its presence.
  • Despite the high prevalence of MetS, there were no significant differences in survival rates or cGVHD severity between patients with and without MetS, suggesting the need for proactive screening to prevent future complications.
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Diffuse midline gliomas (DMG) are the most aggressive brain tumors of childhood and young adults, with documented 2-year survival rates <10%. Treatment failure is due in part to the function of the BBB. Intratumoral microdialysis sampling is an effective tool to determine brain entry of varied agents and could help to provide a better understanding of the relationship of drug permeability to DMG treatment responsivity.

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The tremendous success of chimeric antigen receptor (CAR) T cells in children and young adults (CAYAs) with relapsed/refractory B-cell acute lymphoblastic leukemia is tempered by toxicities such as cytokine release syndrome (CRS). Despite expansive information about CRS, profiling of specific end-organ toxicities secondary to CAR T-cell therapy in CAYAs is limited. This retrospective, single-center study sought to characterize end-organ specific adverse events (AEs) experienced by CAYAs during the first 30 days after CAR T-cell infusion.

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  • A study was conducted on kidney complications specifically among patients with chronic graft-versus-host disease (cGVHD) who underwent allogeneic hematopoietic stem cell transplants, involving 365 participants.
  • Out of the participants, 64 experienced kidney dysfunction, with 29 having moderate to severe issues, and those with dysfunction were more likely to have been treated with cyclosporine.
  • The analysis indicated that factors like cyclosporine use and protein levels were associated with kidney dysfunction, and lower overall survival was noted in patients with moderate-severe kidney issues, highlighting the need for better management of kidney health in these patients.
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  • Antibodies targeting the insulin-like growth factor type 1 receptor (IGF-1R) can lead to temporary tumor responses in rhabdomyosarcoma (RMS), but combining them with dasatinib, an inhibitor of YES (a molecule linked to resistance), shows more promise.
  • A phase I trial involved patients with aggressive forms of RMS, where they received the anti-IGF-1R antibody ganitumab alongside dasatinib, with dosages carefully adjusted to find the maximum tolerated dose.
  • Results indicated that while the treatment was generally safe and tolerable, with a moderate disease control rate of 22% over five months, only a few patients experienced significant responses, suggesting the need for further
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Outcomes for post-chimeric antigen receptor (CAR) T cell therapy (CART) relapse are poor. The utilization of a unique CAR T cell construct for post-CART failure is increasing, but this approach is not well described. In this study, with CART-A the first unique CAR T cell construct received and CART-B the second, the primary objective was to characterize outcomes following CART-B.

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Background: Selumetinib shrank inoperable symptomatic plexiform neurofibromas (PN) in children with neurofibromatosis type 1 (NF1) and provided clinical benefit for many in our previously published phase 1/2 clinical trials (SPRINT, NCT01362803). At the data cutoff (DCO) of the prior publications, 65% of participants were still receiving treatment. This report presents up to 5 years of additional safety and efficacy data from these studies.

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Background: Lymphomatoid granulomatosis is a rare Epstein-Barr virus-associated B-cell lymphoproliferative disorder with a median overall survival of less than 2 years. In this study, we hypothesised that low-grade lymphomatoid granulomatosis is immune-dependent and high-grade lymphomatoid granulomatosis is immune-independent. On the basis of this hypothesis, we investigated the activity and safety of new treatment with immunotherapy in patients with low-grade disease and standard chemotherapy in patients with high-grade disease.

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As the era of cancer genomics expands, disproportionate rates of prostate cancer incidence and mortality by race have demonstrated increasing relevance in clinical settings. While Black men are most particularly affected, as data has historically shown, the opposite is observed for Asian men, thus creating a basis for exploring genomic pathways potentially involved in mediating these opposing trends. Studies on racial differences are limited by sample size, but recent expanding collaborations between research institutions may improve these imbalances to enhance investigations on health disparities from the genomics front.

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