Evidence Hub

Idiosyncratic Drug-Induced Neutropenia Following Pantoprazole, Moxifloxacin Hydrochloride, and Rifabutin Treatment for Helicobacter pylori: A Case Report

Emily Furar, Anita Jacob, Aymara Fernandez de la Vara

Cureus, 2025

1 citation

Abstract

Idiosyncratic drug-induced neutropenia (IDIN) is a rare but potentially life-threatening condition characterized by immune-mediated neutrophil destruction. We present the case of a 45-year-old female who developed severe neutropenia following a 14-day Helicobacter pylori treatment regimen containing pantoprazole, moxifloxacin hydrochloride, and rifabutin. The patient initially presented with a one-week history of fever, chills, and myalgias, with laboratory findings revealing leukopenia and thrombocytopenia. Based on the temporal relationship between medication use and symptom onset, drug-induced neutropenia was suspected. Further follow-up and workup were completed, and the patient’s symptoms resolved within one week of stopping the treatment regimen. Repeat bloodwork at this time also demonstrated recovery of her white blood cell count, further supporting the diagnosis. Rifabutin, though an effective alternative for antibiotic-resistant H. pylori infections, has been associated with cases of hematologic complications, including neutropenia, as seen in this patient. In 2019, rifabutin was approved for the treatment of H. pylori, and its use is likely to increase. This case, therefore, highlights the importance of early recognition of IDIN as a potential adverse effect of rifabutin treatment, particularly in patients presenting with acute-onset, unexplained fever and hematologic abnormalities. Early detection, discontinuation of the offending agent, and close hematologic…

How strong is the evidence?

Evidence Hub reads this as a case report, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

Read the paper

Related studies

Go deeper in Evidence Hub

Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.

Open this study Sign up free