rs367863044

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP5

The NM_005589.4(ALDH6A1):​c.1603C>T​(p.Arg535Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000046 in 1,607,026 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R535H) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

ALDH6A1
NM_005589.4 missense

Scores

1
9
9

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 4.57

Publications

3 publications found
Variant links:
Genes affected
ALDH6A1 (HGNC:7179): (aldehyde dehydrogenase 6 family member A1) This gene encodes a member of the aldehyde dehydrogenase protein family. The encoded protein is a mitochondrial methylmalonate semialdehyde dehydrogenase that plays a role in the valine and pyrimidine catabolic pathways. This protein catalyzes the irreversible oxidative decarboxylation of malonate and methylmalonate semialdehydes to acetyl- and propionyl-CoA. Methylmalonate semialdehyde dehydrogenase deficiency is characterized by elevated beta-alanine, 3-hydroxypropionic acid, and both isomers of 3-amino and 3-hydroxyisobutyric acids in urine organic acids. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jun 2013]
BBOF1 (HGNC:19855): (basal body orientation factor 1) Predicted to be involved in motile cilium assembly. Predicted to be located in ciliary basal body. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 14-74060647-G-A is Pathogenic according to our data. Variant chr14-74060647-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 208072.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ALDH6A1NM_005589.4 linkc.1603C>T p.Arg535Cys missense_variant Exon 12 of 12 ENST00000553458.6 NP_005580.1 Q02252-1A0A024R6G4
BBOF1NM_025057.3 linkc.1578+3389G>A intron_variant Intron 11 of 11 ENST00000394009.5 NP_079333.2 Q8ND07

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ALDH6A1ENST00000553458.6 linkc.1603C>T p.Arg535Cys missense_variant Exon 12 of 12 1 NM_005589.4 ENSP00000450436.1 Q02252-1
BBOF1ENST00000394009.5 linkc.1578+3389G>A intron_variant Intron 11 of 11 2 NM_025057.3 ENSP00000377577.3 Q8ND07

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152094
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251372
AF XY:
0.00000736
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:
0.00000880
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000495
AC:
72
AN:
1454932
Hom.:
0
Cov.:
30
AF XY:
0.0000414
AC XY:
30
AN XY:
724308
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33310
American (AMR)
AF:
0.00
AC:
0
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26100
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39666
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86106
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53412
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5754
European-Non Finnish (NFE)
AF:
0.0000642
AC:
71
AN:
1105716
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60152
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.455
Heterozygous variant carriers
0
4
7
11
14
18
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.0000131
AC:
2
AN:
152094
Hom.:
0
Cov.:
31
AF XY:
0.0000135
AC XY:
1
AN XY:
74298
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
41414
American (AMR)
AF:
0.00
AC:
0
AN:
15248
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5200
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68016
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.029673), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.400
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000284
Hom.:
0
Bravo
AF:
0.0000189
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Methylmalonate semialdehyde dehydrogenase deficiency Pathogenic:1
Jul 09, 2013
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.34
BayesDel_addAF
Uncertain
0.038
T
BayesDel_noAF
Benign
-0.17
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.19
T;.;T
Eigen
Benign
0.046
Eigen_PC
Uncertain
0.26
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Uncertain
0.96
D;D;D
M_CAP
Pathogenic
0.57
D
MetaRNN
Uncertain
0.45
T;T;T
MetaSVM
Benign
-0.66
T
MutationAssessor
Benign
1.0
L;.;.
PhyloP100
4.6
PrimateAI
Benign
0.36
T
PROVEAN
Benign
-0.91
N;N;N
REVEL
Uncertain
0.34
Sift
Uncertain
0.0010
D;D;D
Sift4G
Uncertain
0.0020
D;D;D
Polyphen
0.0010
B;.;.
Vest4
0.43
MVP
0.76
MPC
0.72
ClinPred
0.78
D
GERP RS
5.1
Varity_R
0.12
gMVP
0.80
Mutation Taster
=8/92
disease causing

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: rs367863044; hg19: chr14-74527350; API