rs139457557

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4BP6

The NM_000016.6(ACADM):c.666C>A(p.Phe222Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000843 in 1,613,814 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00047 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000044 ( 1 hom. )

Consequence

ACADM
NM_000016.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 1.87

Variant links:

Genes affected

ACADM (HGNC:89): (acyl-CoA dehydrogenase medium chain) This gene encodes the medium-chain specific (C4 to C12 straight chain) acyl-Coenzyme A dehydrogenase. The homotetramer enzyme catalyzes the initial step of the mitochondrial fatty acid beta-oxidation pathway. Defects in this gene cause medium-chain acyl-CoA dehydrogenase deficiency, a disease characterized by hepatic dysfunction, fasting hypoglycemia, and encephalopathy, which can result in infantile death. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACADM links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_000016.6

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.4227538).

BP6

Variant 1-75745872-C-A is Benign according to our data. Variant chr1-75745872-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 582928.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ACADM	NM_000016.6 linkuse as main transcript	c.666C>A	p.Phe222Leu	missense_variant	8/12	ENST00000370841.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ACADM	ENST00000370841.9 linkuse as main transcript	c.666C>A	p.Phe222Leu	missense_variant	8/12	1	NM_000016.6	P4	P11310-1

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00162

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000479

GnomAD3 exomes

AF:

0.0000915

AC:

AN:

251376

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135878

show subpopulations

Gnomad AFR exome

AF:

0.00135

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000445

AC:

AN:

1461620

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.00158

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000467

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.000484

AC XY:

AN XY:

74388

show subpopulations

Gnomad4 AFR

AF:

0.00164

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000500

Hom.:

Bravo

AF:

0.000574

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000157

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Medium-chain acyl-coenzyme A dehydrogenase deficiency

Uncertain:2Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 31, 2024	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	May 04, 2017	- -
Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Mar 08, 2022	The ACADM c.666C>A; p.Phe222Leu variant (rs139457557), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 582928). This variant is found in the African population with an allele frequency of 0.14% (35/24952 alleles, including one homozygote) in the Genome Aggregation Database. The phenylalanine at codon 222 is highly conserved, and computational analyses predict that this variant is deleterious (REVEL: 0.708). Due to limited information, the clinical significance of the p.Phe222Leu variant is uncertain at this time. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 29, 2021

The p.F222L variant (also known as c.666C>A), located in coding exon 8 of the ACADM gene, results from a C to A substitution at nucleotide position 666. The phenylalanine at codon 222 is replaced by leucine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.44

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.78

D;D;D;.

Eigen

Benign

-0.13

Eigen_PC

Benign

-0.048

FATHMM_MKL

Uncertain

0.87

LIST_S2

Pathogenic

0.98

D;D;D;D

M_CAP

Pathogenic

0.63

MetaRNN

Benign

0.42

T;T;T;T

MetaSVM

Uncertain

0.79

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.78

PROVEAN

Pathogenic

-5.7

D;D;D;D

REVEL

Pathogenic

0.71

Sift

Benign

0.095

T;T;T;T

Sift4G

Benign

0.067

T;T;T;T

Polyphen

0.74

P;P;B;B

Vest4

0.96

MutPred

0.77

.;.;Loss of ubiquitination at K250 (P = 0.0853);.;

MVP

0.89

MPC

0.38

ClinPred

0.14

GERP RS

3.3

Varity_R

0.87

gMVP

0.87

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over