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Open research questions in Helicobacter pylori-related gastroenterology studies

160 unresolved questions extracted from the limitations and future-work sections of 619 Helicobacter pylori-related gastroenterology studies papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Detailed stratified analyses based on clinical and demographic variables were not performed, - The study had a limited sample size of 46 gastric biopsy specimens, - The study only examined gastric biopsy specimens from patients with dyspepsia in the Democratic Republic of the Congo

    Low-Abundance and Fragmentary Helicobacter pylori DNA Detected in Phenotypically Negative Gastric Biopsies Using Targeted Sequencing · 2026 · DOI

  • Standard diagnostic techniques can sometimes fail when bacterial load is low or after recent treatment. There is a need to better understand H. pylori resistance mechanisms. The presence of low-abundance and fragmentary H. pylori DNA in phenotypically negative gastric biopsies is not well understood.

    Low-Abundance and Fragmentary Helicobacter pylori DNA Detected in Phenotypically Negative Gastric Biopsies Using Targeted Sequencing · 2026 · DOI

  • The limitation of the current method for diagnosing atrophic gastritis. The need for a more comprehensive understanding of the disease. The challenge of distinguishing between corpus-restricted atrophy and pangastritis.

    Comment on: “Proton pump inhibitor challenge to confirm diagnosis of atrophic gastritis of the stomach: a proposal” – the critical omission of gastrin-17 in the diagnostic algorithm · 2026 · DOI

  • lack of inter-platform harmonization across analyzers from different manufacturers - preanalytical factors may influence RDW measurements - potential confounding variables over a period of 10 years

    Comment on: “Proton pump inhibitor challenge to confirm diagnosis of atrophic gastritis of the stomach: a proposal” – the critical omission of gastrin-17 in the diagnostic algorithm · 2026 · DOI

  • The study identifies challenges related to clarithromycin resistance in H. pylori infection. It notes the importance of evaluating the effectiveness of different treatment regimens. The study also mentions the need to assess adverse events related to eradication therapy and patient compliance.

    Fourteen-Day Amoxicillin- or Tetracycline-Containing Bismuth Quadruple Therapy versus 14-Day Metronidazole-Based Triple Therapy as the Treatment for Clarithromycin-Resistant Helicobacter pylori Infection: A Multicenter Randomized Controlled Trial · 2026 · DOI

  • There is a need to compare the effectiveness of different treatment regimens for clarithromycin-resistant H. pylori infection. The current study aims to address this gap by evaluating the PAM-B, PAM, and PBMT regimens.

    Fourteen-Day Amoxicillin- or Tetracycline-Containing Bismuth Quadruple Therapy versus 14-Day Metronidazole-Based Triple Therapy as the Treatment for Clarithromycin-Resistant Helicobacter pylori Infection: A Multicenter Randomized Controlled Trial · 2026 · DOI

  • The challenge of rising clarithromycin resistance in Helicobacter pylori infection. The difficulty in achieving high eradication rates with standard triple therapy. The need for molecular resistance testing to guide tailored therapy approaches.

    Reconsidering First-Line Therapy for Clarithromycin-Resistant Helicobacter pylori in Korea: The Role of Bismuth-Augmented Triple Therapy · 2026 · DOI

  • Recruitment was limited to southeastern Korea, - The comparison between PAM-B and PBMT was not pre-specified as a formal non-inferiority analysis, - Unmeasured co-resistance to metronidazole may have contributed to residual failures, - The absence of blinding and trial registration may have biased reporting of subjective outcomes

    Reconsidering First-Line Therapy for Clarithromycin-Resistant Helicobacter pylori in Korea: The Role of Bismuth-Augmented Triple Therapy · 2026 · DOI

  • Clinical and methodological heterogeneity across studies. High between-study heterogeneity in eradication rates. The need to exclude small clarithromycin-resistant subgroups to assess the robustness of the findings.

    Efficacy of Potassium-Competitive Acid Blockers Versus Proton Pump Inhibitors in Eradication Regimens for Clarithromycin-Resistant Helicobacter pylori: A Systematic Review and Meta-Analysis · 2026 · DOI

  • Further studies are needed to determine the optimal P-CAB regimen, - Research on the efficacy of P-CABs in different patient populations is required, - Investigation of the cost-effectiveness of P-CAB-based regimens compared to PPI-based regimens

    Efficacy of Potassium-Competitive Acid Blockers Versus Proton Pump Inhibitors in Eradication Regimens for Clarithromycin-Resistant Helicobacter pylori: A Systematic Review and Meta-Analysis · 2026 · DOI

  • pylori infection and dyslipidemia, potentially contributing to atherosclerosis and cardiovascular disease; however, findings remain inconsistent and causal relationships are debated.

    Association of Helicobacter Pylori Infection and Dyslipidemia Among Individuals Attending General Health Checkups at Tribhuvan University Teaching Hospital. · 2026 · DOI

  • However, their comparative pathogenic roles and interactions remain poorly defined.

    Differential pro-tumorigenic effects of Helicobacter pylori and Streptococcus anginosus on AGS cells: contact-dependent versus metabolite-driven mechanisms · 2026 · DOI

  • Abstract Altered gut microbiota has evidenced to be associated with colitis and colonic tumorigenesis, however bacteria‐driven mechanism underlying inflammation‐related colon pathologies remains undetermined.

    Megasphaera Elesdenii Dysregulates Colon Epithelial Homeostasis, Aggravates Colitis‐Associated Tumorigenesis · 2025 · DOI

  • However, pediatric-specific thresholds and their association with peptic ulcer (PU) disease remain inadequately defined.

    Quantitative ¹³C-urea breath test values predict peptic ulcer risk in Helicobacter pylori -infected children: a retrospective study · 2025 · DOI

  • However, its significance in children and the long-term outcome remain poorly understood.

    Gastric Intestinal Metaplasia in Children and Adolescents Is Reversible upon Reaching Adulthood—Results from a Long-Term Cohort Study · 2025 · DOI

  • pylori) infection remains a significant public health concern in developing countries, especially among pediatric populations where data are limited.

    Prevalence, associated factors, and clinical outcomes of Helicobacter pylori infection in pediatric populations in a war-torn urban environment in Eastern Democratic Republic of Congo: a mixed methods study · 2025 · DOI

  • However, a comprehensive understanding of the molecular triggers for malignant transformation of the gastric mucosa is still lacking.

    A critical review on In Vivo and Ex Vivo models for the investigation of Helicobacter pylori infection · 2025 · DOI

  • 75), particularly with HCV coinfection, but mechanistic and cohort data remain conflicting.

    Beyond the stomach: the association between Helicobacter pylori and the spectrum of digestive cancers · 2025 · DOI

  • BACKGROUND: Nanjing City has a high-incidence gastric cancer (GC), but the epidemiology of gastric precancerous lesions (GPLs) remains poorly understood.

    Epidemiology of Helicobacter pylori, gastric precancerous lesions and gastric cancer: a multicenter, population-based cross-sectional study in Nanjing · 2025 · DOI

  • Therefore, these inhibitors should be further investigated as alternative treatments for H.

    The effect of three urease inhibitors on H. pylori viability, urease activity and urease gene expression · 2024 · DOI

  • Studies suggest links between diabetes and gastrointestinal (GI) traits; however, their underlying biological mechanisms remain unclear.

    Genome-wide cross-disease analyses highlight causality and shared biological pathways of type 2 diabetes with gastrointestinal disorders · 2024 · DOI

  • (HP) activity of this compound has not been extensively studied or confirmed in scientific research.

    1,3,6-Trigalloylglucose: A Novel Potent Anti-Helicobacter pylori Adhesion Agent Derived from Aqueous Extracts of Terminalia chebula Retz · 2024 · DOI

  • Obesity continues to advance and may cause increases in cardia cancer, particularly in Western populations, and careful monitoring of this outcome is warranted in both Western and Asian populations.

    Epidemiology of Gastric Cancer—Changing Trends and Global Disparities · 2024 · DOI

  • pylori and colorectal neoplasms, comprehensive retrospective cohort studies were lacking.

    Kill Two Birds with One Stone? The Effect of Helicobacter pylori Eradication in Decreased Prevalence of Gastric Cancer and Colorectal Cancer · 2024 · DOI

  • BACKGROUND: Helicobacter pylori is a prevalent infection that may complicate pregnancy, but evidence remains limited, controversial and may not apply to all pregnant women.

    The association of Helicobacter pylori with adverse pregnancy outcomes in three European birth cohorts · 2024 · DOI

Most-cited papers in Helicobacter pylori-related gastroenterology studies

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160 open questions have been extracted from the limitations and future-work passages of 619 Helicobacter pylori-related gastroenterology studies papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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