rs1293033867

Variant names:

• chr10-117255657-G-A
• rs1293033867
• NM_003054.6:c.895G>A

Your query was ambiguous. Multiple possible variants found:

• chr10-117255657-G-A
• chr10-117255657-G-C
• chr10-117255657-G-T

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2 PM5 PP3_Strong

The NM_003054.6(SLC18A2):​c.895G>A​(p.Gly299Ser) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. 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. G299R) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SLC18A2 NM_003054.6 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.86
• Publications: 0 publications found

Genes affected

SLC18A2 (HGNC:10935): (solute carrier family 18 member A2) This gene encodes an transmembrane protein that functions as an ATP-dependent transporter of monoamines, such as dopamine, norepinephrine, serotonin, and histamine. This protein transports amine neurotransmitters into synaptic vesicles. Polymorphisms in this gene may be associated with schizophrenia, bipolar disorder, and other neurological/psychiatric ailments. [provided by RefSeq, Jun 2018]

SLC18A2 Gene-Disease associations (from GenCC):

• brain dopamine-serotonin vesicular transport disease

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, G2P
• parkinsonism-dystonia, infantile, 2

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• schizophrenia

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr10-117255657-G-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 520811.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC18A2	NM_003054.6	c.895G>A	p.Gly299Ser	missense_variant, splice_region_variant	Exon 9 of 16	ENST00000644641.2	NP_003045.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC18A2	ENST00000644641.2	c.895G>A	p.Gly299Ser	missense_variant, splice_region_variant	Exon 9 of 16		NM_003054.6	ENSP00000496339.1
SLC18A2	ENST00000497497.1	n.1311G>A		splice_region_variant, non_coding_transcript_exon_variant	Exon 8 of 15	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460798 Hom.: 0 Cov.: 35 AF XY: 0.00000413 AC XY: 3 AN XY: 726720

⚠️ 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: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86242

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52588

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5686

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111886

Other (OTH) AF: 0.00 AC: 0 AN: 60372

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.022510), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.24
CADD	Pathogenic	37
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.63	D;D
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.87	.;D
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.92	D;D
MetaSVM	Uncertain	0.40	D
MutationAssessor	Pathogenic	3.3	M;M
PhyloP100		9.9
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-5.0	D;.
REVEL	Pathogenic	0.77
Sift	Uncertain	0.0080	D;.
Sift4G	Uncertain	0.029	D;.
Polyphen		1.0	D;D
Vest4		0.79
MutPred		0.71		Loss of catalytic residue at I301 (P = 0.1566);Loss of catalytic residue at I301 (P = 0.1566);
MVP		0.80
MPC		0.77
ClinPred		1.0	D
GERP RS		5.1
Varity_R		0.70
gMVP		0.82
Mutation Taster		=16/84	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.99
SpliceAI score (max)		0.84		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.68		Position offset: 39
DS_DL_spliceai		0.84		Position offset: 0

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1293033867; hg19: chr10-119015168; COSMIC: COSV108146281;