rs35446002

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_020461.4(TUBGCP6):​c.2021C>T​(p.Ala674Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000656 in 1,614,142 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A674T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0035 ( 6 hom., cov: 32)
Exomes 𝑓: 0.00036 ( 4 hom. )

Consequence

TUBGCP6
NM_020461.4 missense

Scores

18

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 1.69

Publications

2 publications found
Variant links:
Genes affected
TUBGCP6 (HGNC:18127): (tubulin gamma complex component 6) The protein encoded by this gene is part of a large multisubunit complex required for microtubule nucleation at the centrosome. [provided by RefSeq, Jul 2008]
TUBGCP6 Gene-Disease associations (from GenCC):
  • microcephaly and chorioretinopathy 1
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0029623508).
BP6
Variant 22-50224555-G-A is Benign according to our data. Variant chr22-50224555-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 212507.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00352 (536/152340) while in subpopulation AFR AF = 0.0123 (512/41576). AF 95% confidence interval is 0.0114. There are 6 homozygotes in GnomAd4. There are 260 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 6 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TUBGCP6NM_020461.4 linkc.2021C>T p.Ala674Val missense_variant Exon 11 of 25 ENST00000248846.10 NP_065194.3 Q96RT7-1
TUBGCP6XR_001755343.3 linkn.2585C>T non_coding_transcript_exon_variant Exon 11 of 20
TUBGCP6XR_007067982.1 linkn.2585C>T non_coding_transcript_exon_variant Exon 11 of 19
TUBGCP6XR_938347.3 linkn.2585C>T non_coding_transcript_exon_variant Exon 11 of 23

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TUBGCP6ENST00000248846.10 linkc.2021C>T p.Ala674Val missense_variant Exon 11 of 25 1 NM_020461.4 ENSP00000248846.5 Q96RT7-1

Frequencies

GnomAD3 genomes
AF:
0.00352
AC:
536
AN:
152222
Hom.:
6
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0124
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00124
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00239
GnomAD2 exomes
AF:
0.000879
AC:
221
AN:
251394
AF XY:
0.000618
show subpopulations
Gnomad AFR exome
AF:
0.0124
Gnomad AMR exome
AF:
0.000463
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000264
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000358
AC:
523
AN:
1461802
Hom.:
4
Cov.:
31
AF XY:
0.000293
AC XY:
213
AN XY:
727196
show subpopulations
African (AFR)
AF:
0.0132
AC:
443
AN:
33480
American (AMR)
AF:
0.000827
AC:
37
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53348
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.00000809
AC:
9
AN:
1112000
Other (OTH)
AF:
0.000563
AC:
34
AN:
60390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.465
Heterozygous variant carriers
0
33
66
98
131
164
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00352
AC:
536
AN:
152340
Hom.:
6
Cov.:
32
AF XY:
0.00349
AC XY:
260
AN XY:
74506
show subpopulations
African (AFR)
AF:
0.0123
AC:
512
AN:
41576
American (AMR)
AF:
0.00124
AC:
19
AN:
15298
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10628
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68036
Other (OTH)
AF:
0.00237
AC:
5
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.507
Heterozygous variant carriers
0
26
52
79
105
131
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00290
Hom.:
1
Bravo
AF:
0.00385
ESP6500AA
AF:
0.00794
AC:
35
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.00104
AC:
126
Asia WGS
AF:
0.00115
AC:
4
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Jan 29, 2020
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jan 27, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

not specified Benign:1
Mar 24, 2015
Genetic Services Laboratory, University of Chicago
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.074
BayesDel_addAF
Benign
-0.69
T
BayesDel_noAF
Benign
-0.75
CADD
Benign
7.3
DANN
Benign
0.24
DEOGEN2
Benign
0.018
T;.
Eigen
Benign
-1.2
Eigen_PC
Benign
-0.96
FATHMM_MKL
Benign
0.12
N
LIST_S2
Benign
0.77
T;T
MetaRNN
Benign
0.0030
T;T
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
-1.2
N;.
PhyloP100
1.7
PrimateAI
Benign
0.34
T
PROVEAN
Benign
1.2
N;N
REVEL
Benign
0.037
Sift
Benign
1.0
T;T
Sift4G
Benign
1.0
T;T
Polyphen
0.0020
B;.
Vest4
0.13
MVP
0.20
MPC
0.11
ClinPred
0.0032
T
GERP RS
2.9
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.016
gMVP
0.14
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs35446002; hg19: chr22-50662984; API