Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_019023.5(PRMT7):c.1713C>A(p.Cys571*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,459,240 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.
PRMT7 (HGNC:25557): (protein arginine methyltransferase 7) This gene encodes a member of the protein arginine N-methyltransferase family of proteins. The encoded enzyme transfers single methyl groups to arginine residues to generate monomethylarginines on histone proteins as well as other protein substrates. This enzyme plays a role in a wide range of biological processes, including neuronal differentiation, male germ line imprinting, small nuclear ribonucleoprotein biogenesis, and regulation of the Wnt signaling pathway. Mutations in this gene underlie multiple related syndromes in human patients characterized by intellectual disability, short stature and other features. The encoded protein may promote breast cancer cell invasion and metastasis in human patients. [provided by RefSeq, May 2017]
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 16-68355785-C-A is Pathogenic according to our data. Variant chr16-68355785-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 523434.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-68355785-C-A is described in Lovd as [Pathogenic]. Variant chr16-68355785-C-A is described in Lovd as [Pathogenic].
Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 36399134, 31623504) -
Acanthosis nigricans;C0020473:Hyperlipidemia;C0021655:Insulin resistance;C0028754:Obesity;C0036857:Intellectual disability, severe;C0085271:Self-injurious behavior;C0221357:Brachydactyly;C0262444:Abnormality of the dentition;C0266295:Renal hypoplasia;C0349588:Short stature;C0410528:Skeletal dysplasia;C0424503:Abnormal facial shape;C1184923:Lumbar hyperlordosis;C1837084:Short metacarpal;C2711227:Hepatic steatosis Pathogenic:1
Pathogenic, criteria provided, single submitter
clinical testing
Centre for Mendelian Genomics, University Medical Centre Ljubljana