chr15-40405838-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM2BP4_StrongBP6_Very_StrongBS1

The NM_002225.5(IVD):​c.11C>T​(p.Ala4Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00026 in 1,611,988 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. A4A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0014 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

IVD
NM_002225.5 missense

Scores

1
4
12

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.746
Variant links:
Genes affected
IVD (HGNC:6186): (isovaleryl-CoA dehydrogenase) Isovaleryl-CoA dehydrogenase (IVD) is a mitochondrial matrix enzyme that catalyzes the third step in leucine catabolism. The genetic deficiency of IVD results in an accumulation of isovaleric acid, which is toxic to the central nervous system and leads to isovaleric acidemia. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2017]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.0057845116).
BP6
Variant 15-40405838-C-T is Benign according to our data. Variant chr15-40405838-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 284237.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 = 0.00137 (209/152402) while in subpopulation AFR AF= 0.00464 (193/41596). AF 95% confidence interval is 0.0041. There are 0 homozygotes in gnomad4. There are 103 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
IVDNM_002225.5 linkuse as main transcriptc.11C>T p.Ala4Val missense_variant 1/12 ENST00000487418.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
IVDENST00000487418.8 linkuse as main transcriptc.11C>T p.Ala4Val missense_variant 1/121 NM_002225.5 P4

Frequencies

GnomAD3 genomes
AF:
0.00137
AC:
209
AN:
152284
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00465
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000588
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00143
GnomAD3 exomes
AF:
0.000433
AC:
108
AN:
249576
Hom.:
0
AF XY:
0.000369
AC XY:
50
AN XY:
135358
show subpopulations
Gnomad AFR exome
AF:
0.00529
Gnomad AMR exome
AF:
0.000579
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000655
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000887
Gnomad OTH exome
AF:
0.000165
GnomAD4 exome
AF:
0.000144
AC:
210
AN:
1459586
Hom.:
0
Cov.:
32
AF XY:
0.000128
AC XY:
93
AN XY:
725710
show subpopulations
Gnomad4 AFR exome
AF:
0.00452
Gnomad4 AMR exome
AF:
0.000560
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000990
Gnomad4 OTH exome
AF:
0.000315
GnomAD4 genome
AF:
0.00137
AC:
209
AN:
152402
Hom.:
0
Cov.:
33
AF XY:
0.00138
AC XY:
103
AN XY:
74528
show subpopulations
Gnomad4 AFR
AF:
0.00464
Gnomad4 AMR
AF:
0.000588
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000207
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00142
Alfa
AF:
0.000354
Hom.:
0
Bravo
AF:
0.00168
ESP6500AA
AF:
0.00522
AC:
23
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.000552
AC:
67

ClinVar

Significance: Likely benign
Submissions summary: Benign:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:2
Likely benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Nov 22, 2015- -
Likely benign, criteria provided, single submitterclinical testingGeneDxNov 16, 2017This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Isovaleryl-CoA dehydrogenase deficiency Benign:2
Likely benign, no assertion criteria providedclinical testingNatera, Inc.Sep 13, 2017- -
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 31, 2024- -
not provided Benign:1
Likely benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
IVD-related disorder Benign:1
Likely benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesJun 25, 2019This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.21
CADD
Benign
12
DANN
Uncertain
1.0
Eigen
Benign
-0.88
Eigen_PC
Benign
-0.87
FATHMM_MKL
Benign
0.22
N
LIST_S2
Benign
0.71
.;T;T
M_CAP
Pathogenic
0.33
D
MetaRNN
Benign
0.0058
T;T;T
MetaSVM
Uncertain
0.16
D
MutationTaster
Benign
1.0
N;N;N
PrimateAI
Uncertain
0.60
T
PROVEAN
Benign
0.41
.;N;N
REVEL
Benign
0.26
Sift
Uncertain
0.019
.;D;D
Sift4G
Benign
0.27
T;T;T
Vest4
0.24, 0.25
MVP
0.68
MPC
0.31
ClinPred
0.014
T
GERP RS
2.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.17

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: rs148189323; hg19: chr15-40698039; API