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An extremely preterm infant presented with clinical and radiological features of Robinow syndrome including butterfly vertebrae, posterior rib fusion, brachydactyly, nail hypoplasia, and retromicrognathia resulting in difficult endotracheal intubation in the intensive care setting. Rapid trio exome sequencing detected a novel homozygous likely pathogenic missense variant in the ROR2 gene, NM_004560.3:c.950A>G, p.(Tyr317Cys), for which both parents were heterozygous carriers. In-silico protein modeling predicted a deleterious effect on the function of the protein. We report an extreme premature infant with novel homozygous likely pathogenic variant in the ROR2 gene consistent with autosomal recessive Robinow syndrome. This case expands the phenotypic and genotypic spectrum of this disorder and highlights the benefit of performing rapid exome sequencing early during evaluation to aid in patient management and providing accurate genetic counseling to families. © 2021 Wiley Periodicals LLC.


Helen McDermott, Hannah K Robinson, Richard Caswell, Harsha Gowda, Amaka Offiah, Swati Naik. Robinow syndrome in an extremely preterm infant: Novel homozygous ROR2 variant detected by rapid exome sequencing. American journal of medical genetics. Part A. 2022 Jan;188(1):298-303

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PMID: 34558814

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