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‹ Tue · 19 May 2026
Underserved or high-risk populations

Further delineation of the phenotype and genotype in a newly identified PAN2-related disorder

Two siblings with a new genetic variant expand understanding of an ultra-rare developmental disorder to include previously unrecognized features.

Two siblings with a novel homozygous PAN2 stop-gain variant expand the phenotype of PAN2-related neurodevelopmental disorder to include esophageal atresia and developmental dysplasia of the hip. This case series from Turkey adds to the 7 previously reported patients in 5 families, incrementally expanding the clinical spectrum of this newly described ultra-rare condition.

What the study was

Study design
Case series (2 siblings)
Population
2 siblings with PAN2 loss-of-function variant + neurodevelopmental delay/congenital anomalies (Turkey)
Sample size
2
Category
Genomics/Precision Medicine
Maturity
Exploratory
Journal
Journal of Human Genetics

Why it surfaced

Case series n=2, ultra-rare disease, incremental phenotypic expansion. Score capped at 4. J Human Genetics.

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