Allergy and Immunology Commons^™

Accidental Daily Dosing: Severe Methotrexate Toxicity In A Patient With Rheumatoid Arthritis, Sidra Memon, Kavitha Vemuri, Syed Uzair Mahmood, Darshit Patel

Advances in Clinical Medical Research and Healthcare Delivery

This case highlights a crucial complication of oral methotrexate therapy: toxicity due to dosing errors. A patient’s daily dosing regimen, instead of the intended weekly schedule, led to a significantly excessive cumulative dose of methotrexate over a short period, resulting in severe hematologic and mucosal toxicity. This underscores the importance of clear patient education and vigilant prescription practices to prevent such errors.

Giant Cell Arteritis After Mrna Covid Vaccines: Concerning Or A False Alarm?-A Retrospective Cohort Study, Syed M. F. Zabiullah, Rutwik Pradeep Sharma, Roshan Subedi, Viqarunnisa Faaiza Zahid, Yasir Loai, Sarathlal Mannumbethlal, Aatifa Aatifa

Advances in Clinical Medical Research and Healthcare Delivery

Background: The coronavirus disease (COVID-19) pandemic led to the first large-scale rapid deployment of novel messenger RNA (mRNA) vaccines. Although the effectiveness and safety of these vaccines were rigorously studied, post-vaccination adverse events such as giant cell arteritis (GCA) continue to be reported. More than two hundred and sixty three cases of new-onset GCA occurring after mRNA vaccine administration are listed in the Vaccine Adverse Events Reporting System as of October 2024. We aimed to explore the incidence of GCA after mRNA vaccines among patients in our health system and study their characteristics and outcomes.

Methods: We conducted a …

Drug-Induced Hypersensitivity Syndrome Resulting In Hepatotoxicity And Epstein-Barr Virus Reactivation Following Initiation Of Levetiracetam, Zechariah Jung, Xavier Zonna, Samuel J. Wlasowicz, Conor Banta, Lawrence Canale, Joseph Bielecki

Advances in Clinical Medical Research and Healthcare Delivery

A 28-year-old male with a past medical history of alcohol abuse had new-onset seizures suspected to be caused by alcohol use. Twelve days after starting levetiracetam for seizure prophylaxis, he began to develop a pruritic rash, darkening of his urine, periods of jaundice, and hot flashes that correlated with the timing of his levetiracetam dosing. He was subsequently found to have lymphocyte-predominant leukocytosis, elevated aminotransferases, and alkaline phosphatase. Following discontinuation of his levetiracetam, he was found to have positive Epstein-Barr virus (EBV) serology suggestive of reactivation. This case demonstrates levetiracetam as a rare cause of drug-induced hypersensitivity syndrome (DIHS) along …

Kounis Syndrome – Anaphylaxis-Induced Acute Coronary Syndrome, Austin T. Thacker Do, Brachman Herzig Oms, Brendan Robinson Do, Ahad Anjum Do

Advances in Clinical Medical Research and Healthcare Delivery

Kounis syndrome is an underdiagnosed condition in which anaphylaxis triggers vasospastic acute coronary syndrome, either with or without underlying coronary artery disease. The prevalence of this syndrome among hospitalized patients for allergic/hypersensitivity/anaphylactic reactions in the United States is 1.1%, with a 7% rate of all-cause inpatient mortality. This article presents an anaphylaxis-induced acute coronary syndrome case in a patient with underlying coronary artery disease. The pathophysiological mechanism of anaphylactic-induced acute coronary syndrome involves the inflammatory mediators of type I hypersensitivity reactions.

Extrinsic Allergic Alveolitis: A Systematic Review Of Hla-Dr In Pigeon Breeder’S Disease, Dylan Thibaut, Ryan A. Witcher, Anitha Kunnath, James Toldi

Advances in Clinical Medical Research and Healthcare Delivery

Abstract

Introduction: Pigeon Breeder’s Pneumonitis (PBP) results due to a complex pathophysiology that includes exposure to avian antigens. Susceptibility has been linked to human leukocyte antigen (HLA) class II, though consensus has not been reached. The goal of this systematic review is to further elucidate the association between PBP and HLA-DR subtypes.

Methods: Databases utilized included PubMed, Google Scholar, ScienceDirect, and Cochrane Library. Inclusion required a minimum of three studies in English presenting HLA-DR alleles of PBP and control subgroups. Exclusion was due to insufficient data or non-feasible control groups. Forest plots were created for HLA-DR subtypes’ association …

Graves' Disease And Major Histocompatibility Complex Class Ii: A Meta-Analysis Of Hla-Dq And Hla-Drb1, Dylan Thibaut, Connor Sweeney, Shannon South, Mohamed Hussein

Advances in Clinical Medical Research and Healthcare Delivery

Background: Human leukocyte antigen (HLA) class II has shown potential in determining prognosis, understanding medication reactions, and predicting onset of Graves’ disease. The aim of this study is to further investigate the association between Graves’ disease and HLA class II, specifically HLA-DQ and HLA-DR, via meta-analysis to find HLAs that can be further examined for prognostic reasons.

Methods: Statistical analysis was performed to determine if variants of HLA-DQA1, HLA-DQB1, or HLA-DRB1 were associated with significantly altered odds of Graves’ disease. A minimum of three studies pertaining to a particular HLA was required for inclusion. Studies were excluded if …