4-56467659-G-C

Position:

• chr4-56467659-G-C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BP7 BS2

The NM_006947.4(SRP72):​c.24G>C​(p.Gly8Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000853 in 1,407,552 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000085 (0 hom.)
• Consequence: SRP72 NM_006947.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.55

Genes affected

SRP72 (HGNC:11303): (signal recognition particle 72) This gene encodes the 72 kDa subunit of the signal recognition particle (SRP), a ribonucleoprotein complex that mediates the targeting of secretory proteins to the endoplasmic reticulum (ER). The SRP complex consists of a 7S RNA and 6 protein subunits: SRP9, SRP14, SRP19, SRP54, SRP68, and SRP72, that are bound to the 7S RNA as monomers or heterodimers. SRP has at least 3 distinct functions that can be associated with the protein subunits: signal recognition, translational arrest, and ER membrane targeting by interaction with the docking protein. Mutations in this gene are associated with familial bone marrow failure. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2012]

SRP72 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP7: Synonymous conserved (PhyloP=1.55 with no splicing effect.
• BS2: High AC in GnomAdExome4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SRP72	NM_006947.4	c.24G>C	p.Gly8Gly	synonymous_variant	1/19	ENST00000642900.1	NP_008878.3
SRP72	NM_001267722.2	c.24G>C	p.Gly8Gly	synonymous_variant	1/17		NP_001254651.1
SRP72	XM_024454192.2	c.24G>C	p.Gly8Gly	synonymous_variant	1/17		XP_024309960.1
SRP72	NR_151856.2	n.43G>C		non_coding_transcript_exon_variant	1/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SRP72	ENST00000642900.1	c.24G>C	p.Gly8Gly	synonymous_variant	1/19		NM_006947.4	ENSP00000495128.1
SRP72	ENST00000510663.6	c.24G>C	p.Gly8Gly	synonymous_variant	1/17	1		ENSP00000424576.1
SRP72	ENST00000504757.2	c.24G>C	p.Gly8Gly	synonymous_variant	1/5	2		ENSP00000473576.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000853 AC: 12 AN: 1407552 Hom.: 0 Cov.: 32 AF XY: 0.0000114 AC XY: 8 AN XY: 699136

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: 0.00000736

Gnomad4 OTH exome AF: 0.0000345

GnomAD4 genome Cov.: 31

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 06, 2024

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	9.6
DANN	Benign	0.71
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs552135994; hg19: chr4-57333825;