chr1-66671968-G-C

Position:

• chr1-66671968-G-C

Variant summary

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

The NM_032291.4(SGIP1):​c.533G>C​(p.Arg178Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,744 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: 6.8e-7 (0 hom.)
• Consequence: SGIP1 NM_032291.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.54

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]

(HGNC:):

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
SGIP1	NM_032291.4	c.533G>C	p.Arg178Pro	missense_variant	11/25	ENST00000371037.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SGIP1	ENST00000371037.9	c.533G>C	p.Arg178Pro	missense_variant	11/25	1	NM_032291.4
	ENST00000502413.2	n.53-5001C>G		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461744 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727168

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

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

Oct 10, 2023

The c.533G>C (p.R178P) alteration is located in exon 11 (coding exon 11) of the SGIP1 gene. This alteration results from a G to C substitution at nucleotide position 533, causing the arginine (R) at amino acid position 178 to be replaced by a proline (P). 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	Pathogenic	0.86
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.030
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.082	.;.;T;T
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D;D;D;D
M_CAP	Benign	0.037	D
MetaRNN	Uncertain	0.54	D;D;D;D
MetaSVM	Benign	-0.70	T
MutationAssessor	Benign	1.7	.;.;.;L
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-3.4	D;D;D;D
REVEL	Uncertain	0.41
Sift	Benign	0.11	T;T;T;T
Sift4G	Benign	0.42	T;T;D;T
Polyphen		0.80	.;.;.;P
Vest4		0.48
MutPred		0.23		.;.;.;Gain of glycosylation at R178 (P = 0.0158);
MVP		0.38
MPC		0.67
ClinPred		0.99	D
GERP RS		5.5
Varity_R		0.67
gMVP		0.70

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

LitVar

Other links and lift over

dbSNP: rs373835742; hg19: chr1-67137651;