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rs375310569

Variant summary

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

The NM_003673.4(TCAP):​c.113G>A​(p.Cys38Tyr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,030 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on 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. C38F) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

TCAP
NM_003673.4 missense, splice_region

Scores

2
11
6

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.98
Variant links:
Genes affected
TCAP (HGNC:11610): (titin-cap) Sarcomere assembly is regulated by the muscle protein titin. Titin is a giant elastic protein with kinase activity that extends half the length of a sarcomere. It serves as a scaffold to which myofibrils and other muscle related proteins are attached. This gene encodes a protein found in striated and cardiac muscle that binds to the titin Z1-Z2 domains and is a substrate of titin kinase, interactions thought to be critical to sarcomere assembly. Mutations in this gene are associated with limb-girdle muscular dystrophy type 2G. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

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/exons MANE UniProt
TCAPNM_003673.4 linkuse as main transcriptc.113G>A p.Cys38Tyr missense_variant, splice_region_variant 2/2 ENST00000309889.3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TCAPENST00000309889.3 linkuse as main transcriptc.113G>A p.Cys38Tyr missense_variant, splice_region_variant 2/21 NM_003673.4 P1
TCAPENST00000578283.1 linkuse as main transcriptc.113G>A p.Cys38Tyr missense_variant, splice_region_variant 2/35

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000417
AC:
1
AN:
239770
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
130618
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 SAS exome
AF:
0.0000336
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.86e-7
AC:
1
AN:
1457030
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
724478
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000117
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
ExAC
AF:
0.0000165
AC:
2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.24
BayesDel_addAF
Uncertain
0.11
D
BayesDel_noAF
Uncertain
0.010
CADD
Uncertain
25
DANN
Benign
0.66
DEOGEN2
Pathogenic
0.81
D;.
Eigen
Uncertain
0.38
Eigen_PC
Uncertain
0.41
FATHMM_MKL
Uncertain
0.77
D
LIST_S2
Benign
0.77
T;T
M_CAP
Uncertain
0.13
D
MetaRNN
Uncertain
0.69
D;D
MetaSVM
Uncertain
0.28
D
MutationAssessor
Uncertain
2.1
M;.
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.56
T
PROVEAN
Pathogenic
-4.8
D;.
REVEL
Uncertain
0.64
Sift
Benign
0.72
T;.
Sift4G
Benign
0.55
T;T
Polyphen
0.99
D;.
Vest4
0.33
MutPred
0.79
Gain of phosphorylation at C38 (P = 0.0112);Gain of phosphorylation at C38 (P = 0.0112);
MVP
0.98
MPC
1.2
ClinPred
0.86
D
GERP RS
5.7
Varity_R
0.47
gMVP
0.37

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs375310569; hg19: chr17-37821971; API