Genetic Variant AIFM1:c.249+1226G>A (chrX-130155235-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_145812.3(AIFM1):c.158G>A(p.Gly53Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000913 in 1,095,743 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 10/14 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 9.1e-7 ( 0 hom. 0 hem. )

Consequence

AIFM1
NM_145812.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.29

Variant links:

Genes affected

AIFM1 (HGNC:8768): (apoptosis inducing factor mitochondria associated 1) This gene encodes a flavoprotein essential for nuclear disassembly in apoptotic cells, and it is found in the mitochondrial intermembrane space in healthy cells. Induction of apoptosis results in the translocation of this protein to the nucleus where it affects chromosome condensation and fragmentation. In addition, this gene product induces mitochondria to release the apoptogenic proteins cytochrome c and caspase-9. Mutations in this gene cause combined oxidative phosphorylation deficiency 6 (COXPD6), a severe mitochondrial encephalomyopathy, as well as Cowchock syndrome, also known as X-linked recessive Charcot-Marie-Tooth disease-4 (CMTX-4), a disorder resulting in neuropathy, and axonal and motor-sensory defects with deafness and cognitive disability. Alternative splicing results in multiple transcript variants. A related pseudogene has been identified on chromosome 10. [provided by RefSeq, Aug 2015]

AIFM1 links:

RAB33A (HGNC:9773): (RAB33A, member RAS oncogene family) The protein encoded by this gene belongs to the small GTPase superfamily, Rab family. It is GTP-binding protein and may be involved in vesicle transport. [provided by RefSeq, Jul 2008]

RAB33A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38906008).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AIFM1	NM_004208.4 link	c.249+1226G>A		intron_variant	Intron 2 of 15	ENST00000287295.8	NP_004199.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AIFM1	ENST00000287295.8 link	c.249+1226G>A		intron_variant	Intron 2 of 15	1	NM_004208.4	ENSP00000287295.3		O95831-1
AIFM1	ENST00000675092.1 link	c.249+1226G>A		intron_variant	Intron 2 of 15			ENSP00000501772.1		A0A6Q8PFE1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.13e-7

AC:

AN:

1095743

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

361239

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000119

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.013

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Uncertain

0.99

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.52

M_CAP

Benign

0.020

MetaRNN

Benign

0.39

MetaSVM

Benign

-1.0

PROVEAN

Benign

-1.5

REVEL

Benign

0.092

Sift

Benign

0.035

Sift4G

Benign

0.13

Polyphen

0.73

Vest4

0.49

MutPred

0.28

Loss of sheet (P = 0.0181);

MVP

0.86

ClinPred

0.79

GERP RS

3.3

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over