11-20601496-T-G

Position:

• chr11-20601496-T-G

Variant summary

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

The ENST00000525748.6(SLC6A5):​c.371T>G​(p.Phe124Cys) 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. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F124S) has been classified as Benign.

• Frequency: Genomes: not found (cov: 34)
• Consequence: SLC6A5 ENST00000525748.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.06

Genes affected

SLC6A5 (HGNC:11051): (solute carrier family 6 member 5) This gene encodes a sodium- and chloride-dependent glycine neurotransmitter transporter. This integral membrane glycoprotein is responsible for the clearance of extracellular glycine during glycine-mediated neurotransmission. This protein is found in glycinergic axons and maintains a high presynaptic pool of neurotransmitter at glycinergic synapses. Mutations in this gene cause hyperekplexia; a heterogenous neurological disorder characterized by exaggerated startle responses and neonatal apnea. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 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=0.12651232).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC6A5	NM_004211.5	c.371T>G	p.Phe124Cys	missense_variant	2/16	ENST00000525748.6	NP_004202.4
SLC6A5	NM_001318369.2	c.-193T>G		5_prime_UTR_variant	2/15		NP_001305298.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC6A5	ENST00000525748.6	c.371T>G	p.Phe124Cys	missense_variant	2/16	1	NM_004211.5	ENSP00000434364	P1
SLC6A5	ENST00000298923.11	c.371T>G	p.Phe124Cys	missense_variant, NMD_transcript_variant	2/15	1		ENSP00000298923

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 79

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.098
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	19
DANN	Benign	0.77
DEOGEN2	Benign	0.013	T
Eigen	Benign	-0.81
Eigen_PC	Benign	-0.69
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.27	T
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	P
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	0.050	N
REVEL	Benign	0.13
Sift	Benign	0.14	T
Sift4G	Benign	0.18	T
Polyphen		0.0	B
Vest4		0.14
MutPred		0.33		Gain of disorder (P = 0.0437);
MVP		0.56
MPC		0.28
ClinPred		0.041	T
GERP RS		2.8
Varity_R		0.062
gMVP		0.54

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

LitVar

Other links and lift over

dbSNP: rs1443548; hg19: chr11-20623042;