3-196217859-T-C

Position:

• chr3-196217859-T-C

Variant summary

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

The NM_152672.6(SLC51A):​c.56T>C​(p.Leu19Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC51A NM_152672.6 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 4.11

Genes affected

SLC51A (HGNC:29955): (solute carrier family 51 member A) Predicted to enable protein heterodimerization activity; protein homodimerization activity; and transmembrane transporter activity. Involved in bile acid secretion. Located in basolateral plasma membrane. Implicated in progressive familial intrahepatic cholestasis. [provided by Alliance of Genome Resources, Apr 2022]

LOC105374304 (HGNC:):

PCYT1A (HGNC:8754): (phosphate cytidylyltransferase 1A, choline) This gene belongs to the cytidylyltransferase family and is involved in the regulation of phosphatidylcholine biosynthesis. Mutations in this gene are associated with spondylometaphyseal dysplasia with cone-rod dystrophy. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2015]

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
SLC51A	NM_152672.6	c.56T>C	p.Leu19Pro	missense_variant	2/9	ENST00000296327.10
LOC105374304	XR_001740544.2	n.1130+805A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC51A	ENST00000296327.10	c.56T>C	p.Leu19Pro	missense_variant	2/9	1	NM_152672.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

SLC51A-related disorder Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 29, 2024

The SLC51A c.56T>C variant is predicted to result in the amino acid substitution p.Leu19Pro. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Uncertain	25
DANN	Benign	0.94
DEOGEN2	Benign	0.034	.;T
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.44	T;T
M_CAP	Benign	0.034	D
MetaRNN	Uncertain	0.69	D;D
MetaSVM	Benign	-0.48	T
MutationAssessor	Uncertain	2.8	.;M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.62	T
PROVEAN	Pathogenic	-7.0	D;N
REVEL	Uncertain	0.37
Sift	Uncertain	0.0050	.;D
Sift4G	Uncertain	0.0090	.;D
Polyphen		0.99	.;D
Vest4		0.84
MutPred		0.61		.;Loss of helix (P = 0.0041);
MVP		0.78
MPC		0.63
ClinPred		0.96	D
GERP RS		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.61
gMVP		0.72

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: rs1723636802; hg19: chr3-195944730;