2-45393067-A-G

Position:

• chr2-45393067-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_018079.5(SRBD1):​c.2576T>C​(p.Ile859Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,658 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: SRBD1 NM_018079.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.83

Genes affected

SRBD1 (HGNC:25521): (S1 RNA binding domain 1) Predicted to enable mRNA binding activity. Predicted to be a structural constituent of ribosome. Predicted to be involved in translation. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SRBD1	NM_018079.5	c.2576T>C	p.Ile859Thr	missense_variant	20/21	ENST00000263736.5
SRBD1	XM_011532946.3	c.2528T>C	p.Ile843Thr	missense_variant	20/21
SRBD1	XM_047444861.1	c.1133T>C	p.Ile378Thr	missense_variant	12/13
SRBD1	XM_047444862.1	c.1133T>C	p.Ile378Thr	missense_variant	11/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRBD1	ENST00000263736.5	c.2576T>C	p.Ile859Thr	missense_variant	20/21	2	NM_018079.5	P1
SRBD1	ENST00000490133.5	n.1473T>C		non_coding_transcript_exon_variant	5/6	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461658 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727098

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 17, 2022

The c.2576T>C (p.I859T) alteration is located in exon 20 (coding exon 19) of the SRBD1 gene. This alteration results from a T to C substitution at nucleotide position 2576, causing the isoleucine (I) at amino acid position 859 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	0.39
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.059	T
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.84	T
M_CAP	Benign	0.019	T
MetaRNN	Uncertain	0.52	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.9	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-3.7	D
REVEL	Benign	0.20
Sift	Uncertain	0.0060	D
Sift4G	Uncertain	0.019	D
Polyphen		0.65	P
Vest4		0.55
MutPred		0.59		Gain of disorder (P = 0.0206);
MVP		0.45
MPC		0.016
ClinPred		0.99	D
GERP RS		5.5
Varity_R		0.38
gMVP		0.65

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-45620206;