chr9-137241739-G-C
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP2PP3PP5_Moderate
The NM_006088.6(TUBB4B):c.76G>C(p.Asp26His) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 33)
Consequence
TUBB4B
NM_006088.6 missense
NM_006088.6 missense
Scores
4
6
8
Clinical Significance
Conservation
PhyloP100: 6.32
Genes affected
TUBB4B (HGNC:20771): (tubulin beta 4B class IVb) Enables double-stranded RNA binding activity. Predicted to be involved in microtubule cytoskeleton organization and mitotic cell cycle. Located in microtubule. Implicated in Leber congenital amaurosis with early-onset deafness. [provided by Alliance of Genome Resources, Apr 2022]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, TUBB4B
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.792
PP5
?
Variant 9-137241739-G-C is Pathogenic according to our data. Variant chr9-137241739-G-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1488406.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TUBB4B | NM_006088.6 | c.76G>C | p.Asp26His | missense_variant | 2/4 | ENST00000340384.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TUBB4B | ENST00000340384.5 | c.76G>C | p.Asp26His | missense_variant | 2/4 | 1 | NM_006088.6 | P1 | |
TUBB4B | ENST00000604929.1 | n.149G>C | non_coding_transcript_exon_variant | 2/3 | 1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Mar 09, 2022 | In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This missense change has been observed in individual(s) with clinical features of TUBB4B-related conditions (Invitae). In at least one individual the variant was observed to be de novo. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 26 of the TUBB4B protein (p.Asp26His). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
Cadd
Pathogenic
Dann
Benign
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
T
MutationAssessor
Uncertain
M
MutationTaster
Benign
D
PrimateAI
Pathogenic
D
PROVEAN
Benign
N
REVEL
Uncertain
Sift4G
Benign
T
Polyphen
P
Vest4
MutPred
Gain of catalytic residue at I24 (P = 0.1713);
MVP
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.