Genetic Variant MCTP1:p.Val597Asp (chr5-94894698-A-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_024717.7(MCTP1):c.1790T>A(p.Val597Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000185 in 1,460,758 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

MCTP1
NM_024717.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.34

Variant links:

Genes affected

MCTP1 (HGNC:26183): (multiple C2 and transmembrane domain containing 1) Enables calcium ion binding activity. Predicted to be involved in several processes, including modulation of chemical synaptic transmission; negative regulation of endocytosis; and negative regulation of response to oxidative stress. Is integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

MCTP1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38641208).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MCTP1	NM_024717.7 link	c.1790T>A	p.Val597Asp	missense_variant	Exon 11 of 23	ENST00000515393.6	NP_078993.4	Q6DN14-1B7Z4G1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MCTP1	ENST00000515393.6 link	c.1790T>A	p.Val597Asp	missense_variant	Exon 11 of 23	1	NM_024717.7	ENSP00000424126.1		Q6DN14-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000120

AC:

AN:

250832

AF XY:

0.00000738

show subpopulations

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:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000185

AC:

AN:

1460758

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

726508

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39654

South Asian (SAS)

AF:

0.00

AC:

AN:

86194

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.0000243

AC:

AN:

1111130

Other (OTH)

AF:

0.00

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.444

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000312

Hom.:

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 26, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1790T>A (p.V597D) alteration is located in exon 11 (coding exon 11) of the MCTP1 gene. This alteration results from a T to A substitution at nucleotide position 1790, causing the valine (V) at amino acid position 597 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Uncertain

0.064

BayesDel_noAF

Benign

-0.13

CADD

Benign

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.18

T;.;.;.;T;T;.;T

Eigen

Benign

0.10

Eigen_PC

Benign

-0.033

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.90

D;D;D;D;D;D;D;D

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.39

T;T;T;T;T;T;T;T

MetaSVM

Uncertain

-0.25

MutationAssessor

Uncertain

2.5

M;.;.;.;.;.;.;.

PhyloP100

3.3

PrimateAI

Benign

0.28

PROVEAN

Uncertain

-3.1

D;D;D;D;D;D;D;D

REVEL

Uncertain

0.40

Sift

Benign

0.036

D;D;D;D;T;D;D;D

Sift4G

Uncertain

0.0050

D;T;T;T;.;T;T;T

Polyphen

1.0

D;D;.;D;.;.;.;.

Vest4

0.26

MutPred

0.51

Gain of disorder (P = 0.016);.;.;.;.;.;.;.;

MVP

0.64

MPC

1.3

ClinPred

0.71

GERP RS

1.6

Varity_R

0.36

gMVP

0.80

Mutation Taster

=64/36

polymorphism

(source)

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

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chr5-94894698-A-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over