Histogenetic Classification Predicts Outcomes in 130 Adults With Chronic Intestinal Pseudo-Obstruction

Area of Science:

• Gastroenterology
• Genetics
• Pathology

Background:

• Chronic intestinal pseudo-obstruction (CIPO) is a rare disorder with significant morbidity.
• Genetic variants and histopathological lesions are known contributors.
• Combined evaluation of genetic and histological data in adult CIPO cohorts is limited.

Purpose of the Study:

• To evaluate the contribution of integrated genetic and histological analyses in adult CIPO patients.
• To assess the combined impact of genomic and histopathological data on disease outcomes.

Main Methods:

• Retrospective observational study of 130 adult CIPO patients.
• Genomic profiling including NGS, long-range PCR, whole-exome, and whole-genome sequencing.
• Centralized histological analysis of bowel biopsies integrated with genomic data.

Main Results:

• Genetic and histological analyses characterized 82% of patients, enabling classification into six groups.
• Monogenic Myopathy (n=42), Mitochondriopathy (n=19), Unspecified Myopathy (n=26), Autoimmune Myopathy (n=8), Neuropathy (n=9), and Others (n=26).
• Monogenic myopathy patients exhibited the most favorable long-term survival and improved postoperative outcomes.

Conclusions:

• Integrated genetic and histological evaluation informed etiological classification in adult CIPO.
• This approach may assist in clinical decision-making for CIPO patients.