1-66681884-C-A

Position:

• chr1-66681884-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032291.4(SGIP1):​c.830C>A​(p.Ala277Asp) variant causes a missense 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. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SGIP1 NM_032291.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.30

Genes affected

SGIP1 (HGNC:25412): (SH3GL interacting endocytic adaptor 1) SGIP1 functions as an endocytic protein that affects signaling by receptors in neuronal systems involved in energy homeostasis via its interaction with endophilins (see SH3GL3; MIM 603362) (Trevaskis et al., 2005 [PubMed 15919751] and Uezu et al., 2007 [PubMed 17626015]).[supplied by OMIM, Mar 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1774638).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SGIP1	NM_032291.4	c.830C>A	p.Ala277Asp	missense_variant	15/25	ENST00000371037.9	NP_115667.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SGIP1	ENST00000371037.9	c.830C>A	p.Ala277Asp	missense_variant	15/25	1	NM_032291.4	ENSP00000360076

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

May 28, 2024

The c.830C>A (p.A277D) alteration is located in exon 15 (coding exon 15) of the SGIP1 gene. This alteration results from a C to A substitution at nucleotide position 830, causing the alanine (A) at amino acid position 277 to be replaced by an aspartic acid (D). 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	Benign	0.12
BayesDel_addAF	Benign	-0.0027	T
BayesDel_noAF	Benign	-0.24
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.020	.;T
Eigen	Benign	-0.030
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.89	D;D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.18	T;T
MetaSVM	Benign	-0.81	T
MutationAssessor	Uncertain	2.1	.;M
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.56	T
PROVEAN	Benign	-2.2	N;N
REVEL	Benign	0.11
Sift	Benign	0.076	T;T
Sift4G	Uncertain	0.052	T;T
Polyphen		0.041	.;B
Vest4		0.42
MutPred		0.27		.;Gain of relative solvent accessibility (P = 0.0215);
MVP		0.043
MPC		0.19
ClinPred		0.65	D
GERP RS		5.5
Varity_R		0.26
gMVP		0.28

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs1359709055; hg19: chr1-67147567; COSMIC: COSV52766291; COSMIC: COSV52766291;