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Whole-exome sequencing identifies chronic pancreatitis as a phenotype in 17q12 deletion syndrome

Whole-exome sequencing identifies chronic pancreatitis as a phenotype in 17q12 deletion syndrome
Photo by diabetesmagazijn.nl / Unsplash
Key Takeaway
Note that chronic pancreatitis may be part of the 17q12 deletion syndrome spectrum based on limited case evidence.

This systematic review synthesizes evidence from a single case report concerning an 18-year-old female diagnosed with 17q12 deletion syndrome. Whole-exome sequencing was employed to investigate the association between this genetic condition and pancreatic pathology. The review highlights that pancreatic manifestations in this population commonly include congenital structural abnormalities or atrophy. In contrast, classic chronic pancreatitis is noted as rarely documented within this specific genetic context.

The primary outcome of the analysis was the identification of chronic pancreatitis as a significant clinical phenotype associated with 17q12 deletion syndrome. Secondary observations included the presence of pancreatic atrophy, calcifications, recurrent upper abdominal pain, steatorrhea, and dyspepsia. The authors suggest that these features indicate a broader spectrum of pancreatic involvement linked to the genetic deletion.

Safety data, adverse events, and discontinuations were not reported in the source material. The study design is limited by the inclusion of only one patient, which precludes statistical analysis or generalization to the wider population. Consequently, the certainty of these findings is low, and the evidence is considered preliminary. Further research with larger cohorts is necessary to confirm the prevalence and clinical significance of these pancreatic manifestations.

The practice relevance remains uncertain given the small sample size. Clinicians should interpret these results cautiously while monitoring patients with 17q12 deletion syndrome for atypical pancreatic symptoms. The current evidence does not support changing standard management protocols based solely on these findings.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
Introduction17q12 deletion syndrome is a rare autosomal dominant disorder classically characterized by renal cystic disease, maturity-onset diabetes of the young type 5 (MODY5), and Müllerian duct anomalies (e. g., MRKH syndrome).Case presentationPancreatic manifestations in this syndrome commonly include congenital structural abnormalities (e.g., dorsal agenesis) or atrophy, whereas classic chronic pancreatitis is rarely documented. We report an 18-year-old female with recurrent upper abdominal pain, steatorrhea, and dyspepsia. Imaging revealed pancreatic atrophy with calcifications. Whole-exome sequencing confirmed a diagnosis of 17q12 deletion syndrome.ConclusionThis case is the first to identify chronic pancreatitis as a significant clinical phenotype of 17q12 deletion syndrome. By integrating a literature review, we discuss the pathophysiology related to hepatocyte nuclear factor 1β (HNF1B) haploinsufficiency, suggesting that chronic pancreatitis may constitute part of the syndrome's clinical spectrum.
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