19-38081599-G-A

Position:

• chr19-38081599-G-A

Variant summary

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

The NM_015073.3(SIPA1L3):​c.34G>A​(p.Val12Met) 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: 33)
• Consequence: SIPA1L3 NM_015073.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.981

Genes affected

SIPA1L3 (HGNC:23801): (signal induced proliferation associated 1 like 3) This gene belongs to the signal induced proliferation associated 1 family of genes, which encode GTPase-activating proteins specific for the GTP-binding protein Rap1. Rap1 has been implicated in regulation of cell adhesion, cell polarity, and organization of the cytoskeleton. Like other members of the family, the protein encoded by this gene contains RapGAP and PDZ domains. In addition, this protein contains a C-terminal leucine zipper domain. This gene is proposed to function in epithelial cell morphogenesis and establishment or maintenance of polarity. Consistently, expression of the protein in cell culture showed localization to cell-cell borders in apical regions, and downregulation of the gene in 3D Caco2 cell culture resulted in abnormal cell polarity and morphogenesis. Allelic variants of this gene have been associated with congenital cataracts in humans. [provided by RefSeq, Feb 2016]

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=0.23621935).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SIPA1L3	NM_015073.3	c.34G>A	p.Val12Met	missense_variant	3/22	ENST00000222345.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SIPA1L3	ENST00000222345.11	c.34G>A	p.Val12Met	missense_variant	3/22	1	NM_015073.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

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

Nov 27, 2023

The c.34G>A (p.V12M) alteration is located in exon 3 (coding exon 1) of the SIPA1L3 gene. This alteration results from a G to A substitution at nucleotide position 34, causing the valine (V) at amino acid position 12 to be replaced by a methionine (M). 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	0.11
BayesDel_addAF	Uncertain	0.021	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0093	T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.23
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.24	T
MetaSVM	Uncertain	-0.19	T
MutationAssessor	Benign	0.60	N
MutationTaster	Benign	0.60	N
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-0.45	N
REVEL	Benign	0.28
Sift	Uncertain	0.0070	D
Sift4G	Uncertain	0.016	D
Polyphen		0.98	D
Vest4		0.22
MutPred		0.43		Gain of disorder (P = 0.059);
MVP		0.46
MPC		0.44
ClinPred		0.30	T
GERP RS		4.5
Varity_R		0.083
gMVP		0.41

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-38572239;