rs370423851

Variant names:

• chr3-196217927-C-T
• rs370423851
• NM_152672.6:c.124C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_152672.6(SLC51A):​c.124C>T​(p.Leu42Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000105 in 1,612,456 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: SLC51A NM_152672.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 4.06
• Publications: 0 publications found

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]

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]

PCYT1A Gene-Disease associations (from GenCC):

• spondylometaphyseal dysplasia-cone-rod dystrophy syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet
• Leber congenital amaurosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000309772 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC51A	NM_152672.6	c.124C>T	p.Leu42Phe	missense_variant	Exon 2 of 9	ENST00000296327.10	NP_689885.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC51A	ENST00000296327.10	c.124C>T	p.Leu42Phe	missense_variant	Exon 2 of 9	1	NM_152672.6	ENSP00000296327.5

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152166 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000162 AC: 4 AN: 247478 AF XY: 0.0000224

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000548

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000269

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000110 AC: 161 AN: 1460290 Hom.: 0 Cov.: 31 AF XY: 0.000112 AC XY: 81 AN XY: 726248

African (AFR) AF: 0.0000299 AC: 1 AN: 33434

American (AMR) AF: 0.00 AC: 0 AN: 44582

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26080

East Asian (EAS) AF: 0.00 AC: 0 AN: 39630

South Asian (SAS) AF: 0.00 AC: 0 AN: 85848

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53334

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5742

European-Non Finnish (NFE) AF: 0.000141 AC: 157 AN: 1111308

Other (OTH) AF: 0.0000497 AC: 3 AN: 60332

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152166 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74334

African (AFR) AF: 0.0000241 AC: 1 AN: 41440

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000103 AC: 7 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000565 Hom.: 0

Bravo AF: 0.0000453

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.124C>T (p.L42F) alteration is located in exon 2 (coding exon 2) of the SLC51A gene. This alteration results from a C to T substitution at nucleotide position 124, causing the leucine (L) at amino acid position 42 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

SLC51A-related disorder Uncertain:1

Dec 12, 2023

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The SLC51A c.124C>T variant is predicted to result in the amino acid substitution p.Leu42Phe. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0051% of alleles in individuals of East Asian descent in gnomAD (http://gnomad.broadinstitute.org/variant/3-195944798-C-T). 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	0.17
BayesDel_addAF	Benign	-0.058	T
BayesDel_noAF	Benign	-0.15
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0075	T
Eigen	Uncertain	0.67
Eigen_PC	Pathogenic	0.66
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.62	T
M_CAP	Benign	0.019	T
MetaRNN	Uncertain	0.43	T
MetaSVM	Benign	-0.71	T
MutationAssessor	Uncertain	2.9	M
PhyloP100		4.1
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.21
Sift	Benign	0.043	D
Sift4G	Uncertain	0.047	D
Polyphen		0.99	D
Vest4		0.51
MVP		0.60
MPC		0.58
ClinPred		0.82	D
GERP RS		5.9
PromoterAI		-0.0045	Neutral
Varity_R		0.070
gMVP		0.45
Mutation Taster		=61/39	polymorphism

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

Other links and lift over

dbSNP: rs370423851; hg19: chr3-195944798; COSMIC: COSV56353264; COSMIC: COSV56353264;