Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_001114394.3(TENT2):āc.147A>Cā(p.Arg49Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000323 in 1,608,618 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ).
TENT2 (HGNC:26776): (terminal nucleotidyltransferase 2) Enables 5'-3' RNA polymerase activity and polynucleotide adenylyltransferase activity. Involved in RNA metabolic process and negative regulation of RNA catabolic process. Predicted to be located in nucleus. Predicted to be part of nuclear RNA-directed RNA polymerase complex. Predicted to be active in cytosol. [provided by Alliance of Genome Resources, Apr 2022]
Uncertain significance, criteria provided, single submitter
clinical testing
Ambry Genetics
Jul 14, 2021
The c.147A>C (p.R49S) alteration is located in exon 3 (coding exon 2) of the PAPD4 gene. This alteration results from a A to C substitution at nucleotide position 147, causing the arginine (R) at amino acid position 49 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -