5-151316939-C-G

Variant names:

• chr5-151316939-C-G
• rs758684875
• NM_181776.3:c.1330G>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_181776.3(SLC36A2):​c.1330G>C​(p.Asp444His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. D444N) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SLC36A2 NM_181776.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.89
• Publications: 0 publications found

Genes affected

SLC36A2 (HGNC:18762): (solute carrier family 36 member 2) This gene encodes a pH-dependent proton-coupled amino acid transporter that belongs to the amino acid auxin permease 1 protein family. The encoded protein primarily transports small amino acids such as glycine, alanine and proline. Mutations in this gene are associated with iminoglycinuria and hyperglycinuria. [provided by RefSeq, Sep 2010]

SLC36A2 Gene-Disease associations (from GenCC):

• iminoglycinuria

  Inheritance: AR, AD Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, ClinGen, Orphanet
• hyperglycinuria

  Inheritance: SD, AD, AR Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia

ENSG00000297368 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.757

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181776.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC36A2	NM_181776.3	MANE Select	c.1330G>C	p.Asp444His	missense	Exon 10 of 10	NP_861441.2	Q495M3-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC36A2	ENST00000335244.9	TSL:1 MANE Select	c.1330G>C	p.Asp444His	missense	Exon 10 of 10	ENSP00000334223.4	Q495M3-1
	SLC36A2	ENST00000518280.5	TSL:1	n.*801G>C		non_coding_transcript_exon	Exon 9 of 9	ENSP00000428453.1	E5RGH8
	SLC36A2	ENST00000518617.5	TSL:1	n.*898G>C		non_coding_transcript_exon	Exon 10 of 10	ENSP00000430149.1	E5RGH8

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251424 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461866 Hom.: 0 Cov.: 85 AF XY: 0.00 AC XY: 0 AN XY: 727232

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111986

Other (OTH) AF: 0.00 AC: 0 AN: 60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.72
BayesDel_addAF	Uncertain	0.013	T
BayesDel_noAF	Benign	-0.22
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.062	T
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.011	T
MetaRNN	Pathogenic	0.76	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Pathogenic	3.4	M
PhyloP100		2.9
PrimateAI	Uncertain	0.49	T
PROVEAN	Pathogenic	-5.0	D
REVEL	Benign	0.21
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.50
MutPred		0.68		Gain of sheet (P = 0.0266)
MVP		0.37
MPC		0.65
ClinPred		0.98	D
GERP RS		4.9
Varity_R		0.86
gMVP		0.78
Mutation Taster		=50/50

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: rs758684875; hg19: chr5-150696500;