Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Rady Children's Institute for Genomic Medicine, |
RCV000032991 | SCV000996226 | pathogenic | Congenital disorder of glycosylation type 1t | 2018-12-13 | criteria provided, single submitter | clinical testing | This nonsense variant found in exon 10 of 11 is predicted to result in loss of normal protein function. This variant has been previously reported as a homozygous change in two patients with Pierre Robin sequence, cleft palate, tachycardia, dilated cardiomyopathy, elevated creatine kinase, and elevated liver enzymes (PMID: 22492991, 24499211) and as a compound heterozygous change in trans with c.1172G>T p.Gly391Val in one patient with hypoglycemia, cleft palate, micrognathia, delayed speech development, elevated liver enzymes, and mild enlargment of the left ventricle (PMID: 29858906). Functional characterization of fibroblasts from both patients with a homozygous change demonstrated phosphoglucomutase activity of 7-8% as compared to controls (PMID: 22492991). It is present in the heterozygous state in the gnomAD population database at a frequency of 0.0012% (3/251206) and thus is presumed to be rare. Based on the available evidence, the c.1561C>T p.Arg521Ter variant is classified as pathogenic. |
OMIM | RCV000032991 | SCV000056770 | pathogenic | Congenital disorder of glycosylation type 1t | 2012-10-01 | no assertion criteria provided | literature only |