9-70536333-A-C

Position:

• chr9-70536333-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_001366145.2(TRPM3):​c.4780T>G​(p.Cys1594Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 11/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TRPM3 NM_001366145.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.83

Genes affected

TRPM3 (HGNC:17992): (transient receptor potential cation channel subfamily M member 3) The product of this gene belongs to the family of transient receptor potential (TRP) channels. TRP channels are cation-selective channels important for cellular calcium signaling and homeostasis. The protein encoded by this gene mediates calcium entry, and this entry is potentiated by calcium store depletion. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

KLF9-DT (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TRPM3. . Gene score misZ 3.1768 (greater than the threshold 3.09). Trascript score misZ 3.8237 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, schizophrenia, autosomal dominant non-syndromic intellectual disability, cataract-glaucoma syndrome, neurodevelopmental disorder with hypotonia, dysmorphic facies, and skeletal anomalies, with or without seizures, cataract 50 with or without glaucoma.
• BP4: Computational evidence support a benign effect (MetaRNN=0.41811693).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRPM3	NM_001366145.2	c.4780T>G	p.Cys1594Gly	missense_variant	26/26	ENST00000677713.2	NP_001353074.1
KLF9-DT	XR_001746707.3	n.467-13946A>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRPM3	ENST00000677713.2	c.4780T>G	p.Cys1594Gly	missense_variant	26/26		NM_001366145.2	ENSP00000503830	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 82

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

May 22, 2023

De novo variant with confirmed parentage in a patient referred for genetic testing at GeneDx; however, the reported clinical features are only partially consistent with the features typically observed in individuals with pathogenic variants in this gene (Dyment et al., 2019); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.016	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	22
DANN	Benign	0.95
DEOGEN2	Benign	0.089	.;.;T;T;T;.;.;T;.
Eigen	Uncertain	0.30
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.91	D;D;D;D;D;D;D;.;.
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.42	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.88	T
MutationTaster	Benign	0.89	D;D;D;D;D;D;D;D;D;D;D
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-2.5	D;N;D;D;N;N;D;D;N
REVEL	Benign	0.12
Sift	Uncertain	0.027	D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.056	T;T;T;T;T;T;T;T;T
Polyphen		0.013	B;B;B;B;B;.;.;B;B
Vest4		0.54
MutPred		0.23		.;.;.;Gain of relative solvent accessibility (P = 0.0023);.;.;.;.;.;
MVP		0.63
MPC		0.16
ClinPred		0.93	D
GERP RS		4.6
gMVP		0.43

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-73151249;