rs7488262

Variant names:

• chr12-72031659-T-G
• rs7488262
• NM_173353.4:c.1437T>G

Variant summary

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

The NM_173353.4(TPH2):​c.1437T>G​(p.Asp479Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in UniProt.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TPH2 NM_173353.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.499

Genes affected

TPH2 (HGNC:20692): (tryptophan hydroxylase 2) This gene encodes a member of the pterin-dependent aromatic acid hydroxylase family. The encoded protein catalyzes the first and rate limiting step in the biosynthesis of serotonin, an important hormone and neurotransmitter. Mutations in this gene may be associated with psychiatric diseases such as bipolar affective disorder and major depression. [provided by RefSeq, Feb 2016]

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 rank	MANE	Protein	UniProt
TPH2	NM_173353.4	c.1437T>G	p.Asp479Glu	missense_variant	Exon 11 of 11	ENST00000333850.4	NP_775489.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPH2	ENST00000333850.4	c.1437T>G	p.Asp479Glu	missense_variant	Exon 11 of 11	1	NM_173353.4	ENSP00000329093.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.54
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Benign	17
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.57	D
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.56
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.85	T
M_CAP	Pathogenic	0.39	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Uncertain	0.47	D
MutationAssessor	Benign	1.5	L
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.5	N
REVEL	Uncertain	0.61
Sift	Benign	0.18	T
Sift4G	Benign	0.37	T
Polyphen		0.0090	B
Vest4		0.72
MutPred		0.27		Loss of ubiquitination at K483 (P = 0.1435);
MVP		0.89
MPC		0.92
ClinPred		0.69	D
GERP RS		-2.3
Varity_R		0.39
gMVP		0.42

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: rs7488262; hg19: chr12-72425439;