3-158122262-G-C

Variant names:

• chr3-158122262-G-C
• rs1204058962
• NM_001271838.2:c.158G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001271838.2(RSRC1):​c.158G>C​(p.Arg53Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000138 in 1,446,926 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: RSRC1 NM_001271838.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.19
• Publications: 1 publications found

Genes affected

RSRC1 (HGNC:24152): (arginine and serine rich coiled-coil 1) This gene encodes a member of the serine and arginine rich-related protein family. The encoded protein is involved in both constitutive and alternative mRNA splicing. This gene may be associated with schizophrenia. A pseudogene of this gene is located on chromosome 9. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Nov 2012]

RSRC1 Gene-Disease associations (from GenCC):

• intellectual developmental disorder, autosomal recessive 70

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• autosomal recessive non-syndromic intellectual disability

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RSRC1	NM_001271838.2	c.158G>C	p.Arg53Thr	missense_variant	Exon 2 of 10	ENST00000611884.5	NP_001258767.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RSRC1	ENST00000611884.5	c.158G>C	p.Arg53Thr	missense_variant	Exon 2 of 10	5	NM_001271838.2	ENSP00000481697.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000418 AC: 1 AN: 239350 AF XY: 0.00000771

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000920

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1446926 Hom.: 0 Cov.: 30 AF XY: 0.00000278 AC XY: 2 AN XY: 719780

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 32388

American (AMR) AF: 0.00 AC: 0 AN: 42952

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25776

East Asian (EAS) AF: 0.00 AC: 0 AN: 38478

South Asian (SAS) AF: 0.00 AC: 0 AN: 84488

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53038

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.00000181 AC: 2 AN: 1104450

Other (OTH) AF: 0.00 AC: 0 AN: 59660

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.038550), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Aug 14, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.158G>C (p.R53T) alteration is located in exon 2 (coding exon 1) of the RSRC1 gene. This alteration results from a G to C substitution at nucleotide position 158, causing the arginine (R) at amino acid position 53 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
CADD	Uncertain	25
DANN	Benign	0.96
DEOGEN2	Benign	0.22	T;T;T;T;T;.;.;T;T
Eigen	Pathogenic	0.70
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.83	.;T;T;.;T;.;T;T;T
M_CAP	Benign	0.0062	T
MetaRNN	Uncertain	0.48	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.33	T
MutationAssessor	Uncertain	2.3	M;.;M;M;.;M;M;.;.
PhyloP100		7.2
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-1.9	N;D;.;N;D;D;D;D;D
REVEL	Uncertain	0.39
Sift	Pathogenic	0.0	D;D;.;D;D;T;T;D;D
Sift4G	Uncertain	0.010	D;D;D;D;D;D;D;D;D
Polyphen		0.99	D;.;D;D;.;D;D;.;.
Vest4		0.68
MutPred		0.24		Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);Gain of glycosylation at S50 (P = 0);
MVP		0.86
MPC		0.11
ClinPred		0.82	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.53
gMVP		0.41
Mutation Taster		=69/31	polymorphism

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

Other links and lift over

dbSNP: rs1204058962; hg19: chr3-157840051;