Genetic Variant NM_004208.4:c.1794T>C (chrX-130129605-A-G) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_004208.4(AIFM1):c.1794T>C(p.His598His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000662 in 1,208,246 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 1 hem., cov: 22)

Exomes 𝑓: 0.0000055 ( 0 hom. 5 hem. )

Consequence

AIFM1
NM_004208.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.359

Publications

0 publications found

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:

ENSG00000286650 (HGNC:):

ENSG00000286650 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.53).

BP6

Variant X-130129605-A-G is Benign according to our data. Variant chrX-130129605-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 515891.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.359 with no splicing effect.

BS2

High Hemizygotes in GnomAdExome4 at 5 XL gene

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

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
AIFM1	NM_004208.4	MANE Select	c.1794T>C	p.His598His	synonymous	Exon 16 of 16	NP_004199.1	O95831-1
AIFM1	NM_145812.3		c.1782T>C	p.His594His	synonymous	Exon 16 of 16	NP_665811.1	O95831-3
AIFM1	NM_001130846.4		c.777T>C	p.His259His	synonymous	Exon 7 of 7	NP_001124318.2	E9PMA0

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
AIFM1	ENST00000287295.8	TSL:1 MANE Select	c.1794T>C	p.His598His	synonymous	Exon 16 of 16	ENSP00000287295.3	O95831-1
AIFM1	ENST00000675092.1		c.1821T>C	p.His607His	synonymous	Exon 16 of 16	ENSP00000501772.1	A0A6Q8PFE1
AIFM1	ENST00000319908.8	TSL:1	c.1788T>C	p.His596His	synonymous	Exon 16 of 16	ENSP00000315122.4	A0A7I2PK44

Frequencies

GnomAD3 genomes

AF:

0.0000180

AC:

AN:

111399

Hom.:

Cov.:

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:

0.000282

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000164

AC:

AN:

183400

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000216

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1096847

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

362225

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

26377

American (AMR)

AF:

0.00

AC:

AN:

35200

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19375

East Asian (EAS)

AF:

0.000166

AC:

AN:

30202

South Asian (SAS)

AF:

0.00

AC:

AN:

54105

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40532

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4134

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

840871

Other (OTH)

AF:

0.0000217

AC:

AN:

46051

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Hom

Variant carriers

<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:

0.0000180

AC:

AN:

111399

Hom.:

Cov.:

AF XY:

0.0000298

AC XY:

AN XY:

33597

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30601

American (AMR)

AF:

0.00

AC:

AN:

10440

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2643

East Asian (EAS)

AF:

0.000282

AC:

AN:

3544

South Asian (SAS)

AF:

0.00

AC:

AN:

2632

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6027

Middle Eastern (MID)

AF:

0.00

AC:

AN:

238

European-Non Finnish (NFE)

AF:

0.0000188

AC:

AN:

53093

Other (OTH)

AF:

0.00

AC:

AN:

1502

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Hom

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.0000189

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Combined oxidative phosphorylation deficiency;CN118851:Charcot-Marie-Tooth Neuropathy X (1)

Inborn genetic diseases (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.53

CADD

Benign

3.8

(source)

DANN

Benign

0.70

PhyloP100

-0.36

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over