A novel POC1A variant in an alternatively spliced exon causes classic SOFT syndrome: clinical presentation of seven patients

Adila Al-Kindi, Maryam Al-Shehhi, Ana Westenberger, Christian Beetz, Patrick Scott, Oliver Brandau, Lia Abbasi-Moheb, Zafer Yüksel, Peter Bauer, Arndt Rolfs, Nana Maria Grüning*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Biallelic pathogenic variants in POC1A are ultra rare. They have been reported in 13 families as causing either Short stature, Onychodysplasia, Facial dysmorphism, and hypoTrichosis (SOFT) syndrome, or a milder partially overlapping phenotype, variant POC1A-related syndrome. This pleiotropic effect is likely precipitated by the variant’s location and respective affected protein domain. Here, we describe seven patients from two consanguineous Omani families with classic SOFT syndrome and a novel homozygous POC1A variant (c.64G>T; p.(Val22Phe)), which is the first one described for the alternative exon 2. This result refines the POC1A mutational spectrum relevant for exertion of the described pleiotropic effect. Furthermore, six of our patients experienced recurrent mild to severe respiratory difficulties that have not been previously reported for SOFT syndrome and may be an underdiagnosed or a genotype-specific complication that warrants attention in future studies. Thus, our study unravels new aspects of the genotype-phenotype correlation suggested by previous reports.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
JournalJournal of Human Genetics
Volume65
Issue number2
DOIs
Publication statusPublished - Jan 1 2020
Externally publishedYes

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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