Where scientific discovery meets clinical relevance.
This is the curated destination for science that shapes our understanding of the microbiome and its role in human health. The literature moves fast, and staying current takes time you don't have.
This Journal Club distills the most clinically relevant findings from leading gastroenterology journals into one browsable resource, so you can spend less time searching and more time applying what matters to your practice.
This issue is curated by Karolina Tykwinska, PrecisionBiotics™ Science Lead. Karolina and the PrecisionBiotics™ team review the latest publications across gastroenterology, microbiome
research, and gut-brain therapeutics, selecting the studies most relevant to clinical decision-making.
This issue's papers
01
Khasawneh M et al.
Efficacy of Gut-Brain Neuromodulators and Brain-Gut Behaviour Therapies for IBS: Systematic Review and Network Meta-analysis
Gut, 25 Jun 2026
Summary
Network meta-analysis of 68 RCTs (6,694 patients) comparing neuromodulators and brain-gut behavioral therapies. SNRIs ranked highest, followed by TCAs and emotional processing therapies; CBT and gut-directed hypnotherapy also demonstrated
efficacy.
Why It Matters for Clinical Practice
One of the most important recent papers for treatment selection in IBS.
Reinforces the central role of gut-brain interventions and may influence future guideline recommendations regarding neuromodulators.
02
Nasser Y et al.
Pathophysiology of Irritable Bowel Syndrome
Lancet Gastroenterology & Hepatology, 16 Jul 2026
Summary
Comprehensive review covering microbiota alterations, visceral hypersensitivity, immune activation, permeability defects, bile acid metabolism, motility abnormalities, and central pain processing within a gut-brain axis framework.
Why It Matters for Clinical Practice
Likely to become the key pathophysiology reference for IBS.
Provides the mechanistic rationale for psychobiotics, microbiome interventions, behavioral therapies, and personalized treatment approaches.
03
Yunusova A et al.
Beyond Chronic Stress: Daily Stress Is Associated With Symptoms in Irritable Bowel Syndrome
Clinical Gastroenterology & Hepatology, 17 May 2026
Summary
Ecological momentary assessment study of 357 IBS patients. Daily stress and symptoms were measured three times daily. Higher stress predicted worsening symptoms later the same day, while symptoms predicted subsequent stress.
Why It Matters for Clinical Practice
Recent ecological momentary assessment data indicate that stress and IBS symptoms are dynamically interconnected in daily life.
Increases in stress predict worsening symptom severity later the same day and vice versa, supporting the clinical relevance of gut-brain interactions in IBS.
04
Staller K et al.
The Rome V Criteria for the Diagnosis of IBS in Secondary Care: A Diagnostic Accuracy Study
Lancet Gastroenterology & Hepatology, 2 Jul 2026
Summary
First validation study of Rome V diagnostic criteria. Rome V had lower sensitivity than Rome IV and identified a somewhat different patient population.
Why It Matters for Clinical Practice
Important for clinicians and researchers interpreting future IBS studies.
Suggests that some patients previously labelled as IBS may no longer satisfy Rome V criteria.
05
Staller K et al.
Epidemiological, Clinical, and Psychological Characteristics of Individuals with Self-reported IBS Based on Rome V versus Rome IV Criteria
Comparison of Rome III, Rome IV and Rome V IBS populations. Rome V captured a population with lower symptom burden, less psychological comorbidity, less functional impairment and better quality of life.
Why It Matters for Clinical Practice
Suggests Rome V is not merely changing prevalence but may be redefining the IBS population itself.
This has important implications for future clinical trials and interpretation of efficacy data.
06
Snijkers JTW et al.
In-person Therapist-delivered Hypnotherapy versus Smartphone-based Self-guided Hypnotherapy in IBS
Gut, 23 Jul 2026
Summary
Multicentre RCT comparing therapist-led hypnotherapy, smartphone-delivered hypnotherapy, and psychoeducation. Digital hypnotherapy improved symptoms but did not achieve non-inferiority versus therapist-led treatment.
Why It Matters for Clinical Practice
Supports the use of digital gut-brain therapies to improve access while confirming that therapist-led hypnotherapy remains the most effective option.
07
Alexander JL et al.
Recent Advances in Our Understanding of the Gut Microbiome: An Analysis from the Gut Microbiota for Health Expert Panel of the British Society of Gastroenterology
Gut, 2 Jun 2026
Summary
Expert review of the major advances in microbiome science over the last decade, including metagenomics, multi-omics, microbial therapeutics, FMT, microbiome diagnostics and challenges in clinical translation.
Why It Matters for Clinical Practice
Provides an authoritative assessment of where microbiome science is ready for clinical application, where evidence remains limited, and which research gaps must be addressed before broader implementation of microbiome-targeted interventions.
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