12-63866834-G-T

Position:

• chr12-63866834-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_020762.4(SRGAP1):​c.67+21951G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: 27)
• Consequence: SRGAP1 NM_020762.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.699

Genes affected

SRGAP1 (HGNC:17382): (SLIT-ROBO Rho GTPase activating protein 1) The protein encoded by this gene is a GTPase activator, working with the GTPase CDC42 to negatively regulate neuronal migration. The encoded protein interacts with the transmembrane receptor ROBO1 to inactivate CDC42. [provided by RefSeq, Sep 2016]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SRGAP1	NM_020762.4	c.67+21951G>T		intron_variant		ENST00000355086.8
SRGAP1	NM_001346201.2	c.67+21951G>T		intron_variant
SRGAP1	XM_024449096.2	c.67+21951G>T		intron_variant
SRGAP1	XM_024449097.2	c.67+21951G>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SRGAP1	ENST00000355086.8	c.67+21951G>T		intron_variant		1	NM_020762.4	A1
SRGAP1	ENST00000631006.3	c.67+21951G>T		intron_variant		5		P3
SRGAP1	ENST00000695902.1	c.67+21951G>T		intron_variant, NMD_transcript_variant
SRGAP1	ENST00000537556.1	n.81+21951G>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 27

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 27

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.73
DANN	Benign	0.19

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs7971621; hg19: chr12-64260614;