Publications by authors named "Hamid O"

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  • CheckMate 204 study found that the combination of nivolumab and ipilimumab resulted in high intracranial objective response rates (icORRs) for patients with melanoma brain metastases (MBMs), prompting a need for standardized response criteria.
  • Different assessment criteria (like mRECIST and volumetric measurements) showed higher icORRs and stronger correlations with progression-free survival (icPFS) and overall survival (OS) compared to RANO-BM and RECIST.
  • The analysis suggests that mRECIST and volumetric criteria are reliable scales for future MBM trials, and response can be effectively measured even in patients with small lesions (<10 mm).
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  • Transmembrane integrin-associated protein is shown to be a significant checkpoint in innate immunity that is elevated in cancer cells like melanoma, impacting anti-tumor responses.
  • Research utilized ATAC-Sequencing to uncover increased chromatin accessibility in the promoter region of this protein in melanoma versus normal cells.
  • The study identified the transcription factor NRF-1 as a key regulator binding to specific sites in the promoter region, which is crucial for the protein's upregulation during tumor progression.
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Background: Metastatic uveal melanoma (mUM) is rare. Immune checkpoint inhibitors (ICIs) have shown modest efficacy in mUM. Tebentafusp prolonged overall survival (OS) in a phase 3 study.

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  • Biologics and oral small molecules (OSM) are effective treatments for inflammatory bowel disease (IBD), but concern exists over their potential to increase risks of major adverse cardiovascular events (MACE) and venous thromboembolism (VTE).
  • Using a multi-institutional database, the study matched IBD patients on biologics and OSM with similar patients not on these treatments to assess MACE and VTE risks from 30 days to 3 years post-prescription.
  • Results indicated that biologic-treated IBD patients had lower risks of MACE and VTE after 1 and 3 years, while OSM users showed reduced all-cause mortality but no significant difference in MACE or VTE risks, suggesting
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We whole-genome sequence a drug-resistant strain (PANU108) isolated in 2020 from an elderly male patient admitted to an intensive care unit with bloodstream infection in Khartoum, Sudan. The analysis of the sequenced data revealed that the strain is sequence type 319 (ST319) and carrying 11 acquired resistance genes belonging to 5 drug classes. Interestingly, we found that PANU108 strain harbouring resistance gene.

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Cancer remains a major global cause of death, posing significant treatment challenges. The interactions between tumor cells and the tumor microenvironment (TME) are crucial in influencing tumor initiation, progression, metastasis, and treatment response. There has been significant research and clinical interest in targeting the TME as a therapeutic approach in cancer, with advancements being made through drug development.

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Introduction: Emergency department (ED) clinicians utilize the guaiac fecal occult blood test (gFOBT) in their assessment of suspected gastrointestinal bleeding or unexplained anemia despite supporting evidence. ED clinicians' ability to predict the gFOBT results and how the gFOBT results could affect ED patient disposition has not been previously studied.  Methods: From October 16, 2019, through September 15, 2020, we conducted a single-site survey of ED clinicians before and after performing gFOBTs during routine clinical care.

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The 2023 Cure Ocular Melanoma (CURE OM) Global Science Meeting was held in Philadelphia on November 6, 2023. There is increased awareness and dedicated research in uveal melanoma (UM), but unmet needs remain in the prevention, detection, and treatment of UM. The purpose of this meeting was to provide an international forum for the exchange of research ideas, to allow for discussion of basic science as well as clinical research on UM, and to gather input about advocacy and patient needs.

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  • This study looked at how early treatment helps babies with spinal muscular atrophy (SMA), a condition that affects muscles.
  • Researchers checked the health of 66 babies treated within the first 6 weeks of life and found good results, like all babies being able to sit up on their own.
  • However, some babies with a certain genetic marker (two SMN2 copies) had a harder time walking compared to those with more copies, showing that more studies are needed to improve their care.
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  • The study examined adverse events related to OVESCO® clips and cutters, focusing on data from the FDA's MAUDE database, covering reports from 2007 to 2024.
  • Out of 42 reports, the majority were about OVESCO® clips, with the most common issues being failure to deploy and gastrointestinal perforation as a significant complication.
  • The findings emphasize the importance of careful patient selection and monitoring after procedures, as well as the need for ongoing surveillance to ensure device safety and improve patient outcomes.
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  • In 2013, the SPIRIT group introduced guidelines to enhance reporting quality in randomized controlled trials (RCTs), specifically targeting studies on endoscopic colorectal cancer screening.
  • A review of five RCTs showed adherence to SPIRIT guidelines between 82.4% to 92.2%, with significant gaps in trial registration and informed consent reporting.
  • Overall, 37% of participants invited to screening actually underwent the procedure, highlighting discrepancies in protocol adherence, particularly with one trial showing notably lower rates.
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Background: Pembrolizumab significantly improved overall survival (OS) versus ipilimumab for unresectable advanced melanoma in KEYNOTE-006 (NCT01866319); 10-year follow-up data are presented.

Patients And Methods: Patients with unresectable stage III or IV melanoma were randomly assigned (1:1:1) to pembrolizumab 10 mg/kg i.v.

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  • * In a study of 982 cancer patients from 2020 to 2023, most received the initial vaccine and one booster, but the uptake for the newer bivalent booster was significantly low at only 30.1%.
  • * Despite low booster rates, nearly all participants showed improved immune responses after receiving at least two boosters, and those who got boosted had a lower risk of mortality, highlighting the need for better strategies to encourage vaccinations among this vulnerable group.
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Purpose: Coblockade of lymphocyte activation gene-3 (LAG-3) and PD-1 receptors could provide significant clinical benefit for patients with advanced melanoma. Fianlimab and cemiplimab are high-affinity, human, hinge-stabilized IgG4 monoclonal antibodies, targeting LAG-3 and PD-1, respectively. We report results from a first-in-human phase-I study of fianlimab and cemiplimab safety and efficacy in various malignancies including advanced melanoma.

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Background: Tebentafusp, a bispecific (gp100×CD3) ImmTAC, significantly improved overall survival (OS) outcomes for HLA-A*02:01+ adult patients with untreated metastatic uveal melanoma (mUM) and showed promising survival in previously treated mUM with 1-year OS of 62% in the primary analysis of study IMCgp100-102. Here we report long-term outcomes from this phase 1/2 study in pretreated mUM.

Patients And Methods: Patients with previously treated mUM received tebentafusp weekly intravenous at 20 µg dose 1, 30 µg dose 2 and either 54, 64, 68, or 73 µg (phase 1) or 68 µg (phase 2) dose 3+.

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Background: POLARIS (phase 2 [ph2]; NCT03911869) evaluated encorafenib (BRAF inhibitor) in combination with binimetinib (MEK1/2 inhibitor) in BRAF/MEK inhibitor-naïve patients with V600-mutant melanoma with asymptomatic brain metastases.

Methods: The safety lead-in (SLI) assessed tolerability for high-dose encorafenib 300 mg twice daily (BID) plus binimetinib 45 mg BID. If the high dose was tolerable in ph2, patients would be randomized to receive high or standard dose (encorafenib 450 mg once daily [QD] plus binimetinib 45 mg BID).

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Gut-microbiota modulation shows promise in improving immune-checkpoint blockade (ICB) response; however, precision biomarker-driven, placebo-controlled trials are lacking. We performed a multicenter, randomized placebo-controlled, biomarker-stratified phase I trial in patients with ICB-naïve metastatic melanoma using SER-401, an orally delivered Firmicutesenriched spore formulation. Fecal microbiota signatures were characterized at baseline; patients were stratified by high versus low Ruminococcaceae abundance prior to randomization to the SER-401 arm (oral vancomycin-preconditioning/SER-401 alone/nivolumab + SER-401), versus the placebo arm [placebo antibiotic/placebo microbiome modulation (PMM)/nivolumab + PMM (NCT03817125)].

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Adoptive cell therapy with autologous, ex vivo-expanded, tumor-infiltrating lymphocytes (TILs) is being investigated for treatment of solid tumors and has shown robust responses in clinical trials. Based on the encouraging efficacy, tolerable safety profile, and advancements in a central manufacturing process, lifileucel is now the first US Food and Drug Administration (FDA)-approved TIL cell therapy product. To this end, treatment management and delivery practice guidance is needed to ensure successful integration of this modality into clinical care.

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Purpose: The Targeted Agent and Profiling Utilization Registry Study is a phase II basket trial evaluating the antitumor activity of commercially available targeted agents in patients with advanced cancer and genomic alterations known to be drug targets. Results from cohorts of patients with metastatic breast cancer (BC) with and alterations treated with sunitinib are reported.

Methods: Eligible patients had measurable disease, Eastern Cooperative Oncology Group performance status 0-2, adequate organ function, and no standard treatment options.

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  • A study evaluated the impact of celiac disease (CD) on pregnancy outcomes using a large U.S. database of deliveries from 2015 to 2019.
  • Researchers found that pregnant women with CD faced higher risks of complications like gestational hypertension and preeclampsia, and were less likely to have uncomplicated full-term deliveries.
  • The babies of women with CD were also more likely to be small for their gestational age, indicating increased adverse effects on maternal and neonatal health.
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Background: Pembrolizumab has a manageable safety profile as described in its label, which was primarily based on 2799 patients who participated in clinical trials for melanoma or non-small cell lung cancer. Here, we evaluated the safety of pembrolizumab in a broader population of patients from 31 advanced cancer clinical trials across 19 cancer types.

Methods: Safety was analyzed in patients who received at least one dose of pembrolizumab (200 mg every 3 weeks [Q3W], 10 mg/kg Q2W or Q3W, or 2 mg/kg Q3W).

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Importance: Acral (AM) and mucosal melanomas (MM) are rare subtypes with a poor prognosis. In those with advanced disease, anti-PD-1 (PD1) therapy has reduced activity compared to that seen in non-acral cutaneous melanoma.

Objective: To determine the efficacy of adjuvant PD1 in resected AM or MM.

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