rs147021687

Variant names:

• chr11-65720096-G-C
• rs147021687
• NM_032193.4:c.417C>G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6 BP7 BS1 BS2

The NM_032193.4(RNASEH2C):​c.417C>G​(p.Gly139Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00141 in 1,614,208 control chromosomes in the GnomAD database, including 16 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0021 (3 hom., cov: 32)
  • Exomes 𝑓: 0.0013 (13 hom.)
• Consequence: RNASEH2C NM_032193.4 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:4
• Conservation: PhyloP100: -0.0770

Genes affected

RNASEH2C (HGNC:24116): (ribonuclease H2 subunit C) This gene encodes a ribonuclease H subunit that can cleave ribonucleotides from RNA:DNA duplexes. Mutations in this gene cause Aicardi-Goutieres syndrome-3, a disease that causes severe neurologic dysfunction. A pseudogene for this gene has been identified on chromosome Y, near the sex determining region Y (SRY) gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 11-65720096-G-C is Benign according to our data. Variant chr11-65720096-G-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 305361.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1, Likely_benign=2}. Variant chr11-65720096-G-C is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-0.077 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00215 (327/152364) while in subpopulation NFE AF= 0.00178 (121/68036). AF 95% confidence interval is 0.00152. There are 3 homozygotes in gnomad4. There are 197 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RNASEH2C	NM_032193.4	c.417C>G	p.Gly139Gly	synonymous_variant	Exon 3 of 4	ENST00000308418.10	NP_115569.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RNASEH2C	ENST00000308418.10	c.417C>G	p.Gly139Gly	synonymous_variant	Exon 3 of 4	1	NM_032193.4	ENSP00000308193.5

Frequencies

GnomAD3 genomes AF: 0.00215 AC: 327 AN: 152246 Hom.: 3 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00173

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0186

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00178

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.00241 AC: 606 AN: 251384 Hom.: 8 AF XY: 0.00234 AC XY: 318 AN XY: 135890

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.000397

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.0177

Gnomad NFE exome AF: 0.00185

Gnomad OTH exome AF: 0.00114

GnomAD4 exome AF: 0.00133 AC: 1948 AN: 1461844 Hom.: 13 Cov.: 32 AF XY: 0.00134 AC XY: 976 AN XY: 727224

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.000421

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.0183

Gnomad4 NFE exome AF: 0.000798

Gnomad4 OTH exome AF: 0.00111

GnomAD4 genome AF: 0.00215 AC: 327 AN: 152364 Hom.: 3 Cov.: 32 AF XY: 0.00264 AC XY: 197 AN XY: 74512

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00173

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0186

Gnomad4 NFE AF: 0.00178

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.00197 Hom.: 2

Bravo AF: 0.000620

EpiCase AF: 0.000981

EpiControl AF: 0.000652

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:4

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Aicardi-Goutieres syndrome 3 Uncertain:1 Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	Jun 28, 2017	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 04, 2025	- -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Jun 01, 2024

RNASEH2C: BP4, BP7, BS2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	9.2
DANN	Benign	0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs147021687; hg19: chr11-65487567;