chr11-66554096-T-C
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_001104.4(ACTN3):c.434T>C(p.Ile145Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,613,788 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000039 ( 0 hom., cov: 29)
Exomes 𝑓: 0.0000048 ( 0 hom. )
Consequence
ACTN3
NM_001104.4 missense
NM_001104.4 missense
Scores
8
2
Clinical Significance
Conservation
PhyloP100: 8.00
Genes affected
ACTN3 (HGNC:165): (actinin alpha 3) This gene encodes a member of the alpha-actin binding protein gene family. The encoded protein is primarily expressed in skeletal muscle and functions as a structural component of sarcomeric Z line. This protein is involved in crosslinking actin containing thin filaments. An allelic polymorphism in this gene results in both coding and non-coding variants; the reference genome represents the coding allele. The non-functional allele of this gene is associated with elite athlete status. [provided by RefSeq, Feb 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.859
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ACTN3 | NM_001104.4 | c.434T>C | p.Ile145Thr | missense_variant | 4/21 | ENST00000513398.2 | |
ACTN3 | NM_001258371.3 | c.563T>C | p.Ile188Thr | missense_variant | 4/21 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ACTN3 | ENST00000513398.2 | c.434T>C | p.Ile145Thr | missense_variant | 4/21 | 1 | NM_001104.4 | P1 | |
ACTN3 | ENST00000502692.5 | c.563T>C | p.Ile188Thr | missense_variant | 4/21 | 2 | |||
ACTN3 | ENST00000511191.1 | c.*401T>C | 3_prime_UTR_variant, NMD_transcript_variant | 4/5 | 5 |
Frequencies
GnomAD3 genomes ? AF: 0.0000395 AC: 6AN: 151820Hom.: 0 Cov.: 29
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GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251464Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135910
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GnomAD4 exome AF: 0.00000479 AC: 7AN: 1461850Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3AN XY: 727230
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GnomAD4 genome ? AF: 0.0000395 AC: 6AN: 151938Hom.: 0 Cov.: 29 AF XY: 0.0000404 AC XY: 3AN XY: 74250
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 17, 2023 | The c.434T>C (p.I145T) alteration is located in exon 4 (coding exon 4) of the ACTN3 gene. This alteration results from a T to C substitution at nucleotide position 434, causing the isoleucine (I) at amino acid position 145 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Uncertain
D;D
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D
MetaRNN
Pathogenic
D;D
PrimateAI
Pathogenic
D
Sift4G
Pathogenic
D;D
Polyphen
1.0
.;D
Vest4
MVP
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at