A recent letter to the editor published in Revista Española de Enfermedades Digestivas draws attention to an important omission in a systematic review: the lack of a full search strategy. González Aroca J . Literature searches report in systematic reviews. Rev Esp Enferm Dig. 2025;117:618-619.doi: 10.17235/reed.2024.10848/2024. PMID: 39446109. The letter praises the authors for their overall work, but underscores that without the exact search strings, databases, dates, and filters used in the review, the study cannot be properly reproduced or updated in the future. The systematic review in question is: Tian Z et al. Immunogenicity and risk factors for poor humoral…