X-130129618-T-C

Variant names:

• chrX-130129618-T-C
• rs2029975071
• NM_004208.4:c.1781A>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004208.4(AIFM1):​c.1781A>G​(p.Asp594Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D594A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 23)
• Consequence: AIFM1 NM_004208.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.49
• Publications: 0 publications found

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]

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]

ENSG00000286650 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004208.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AIFM1	NM_004208.4	MANE Select	c.1781A>G	p.Asp594Gly	missense	Exon 16 of 16	NP_004199.1	O95831-1
	AIFM1	NM_145812.3		c.1769A>G	p.Asp590Gly	missense	Exon 16 of 16	NP_665811.1	O95831-3
	AIFM1	NM_001130846.4		c.764A>G	p.Asp255Gly	missense	Exon 7 of 7	NP_001124318.2	E9PMA0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AIFM1	ENST00000287295.8	TSL:1 MANE Select	c.1781A>G	p.Asp594Gly	missense	Exon 16 of 16	ENSP00000287295.3	O95831-1
	AIFM1	ENST00000675092.1		c.1808A>G	p.Asp603Gly	missense	Exon 16 of 16	ENSP00000501772.1	A0A6Q8PFE1
	AIFM1	ENST00000319908.8	TSL:1	c.1775A>G	p.Asp592Gly	missense	Exon 16 of 16	ENSP00000315122.4	A0A7I2PK44

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.63
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.35
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.48	T
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.23	D
MetaRNN	Uncertain	0.60	D
MetaSVM	Uncertain	-0.25	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		7.5
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-4.3	D
REVEL	Uncertain	0.45
Sift	Benign	0.077	T
Sift4G	Benign	0.11	T
Polyphen		0.021	B
Vest4		0.65
MutPred		0.40		Loss of helix (P = 0.0017)
MVP		0.98
MPC		0.91
ClinPred		0.98	D
GERP RS		5.0
Varity_R		0.87
gMVP		0.95
Mutation Taster		=22/78	disease causing

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

Other links and lift over

dbSNP: rs2029975071; hg19: chrX-129263593;