11-22625462-G-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_022725.4(FANCF):c.349C>A(p.Pro117Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000128 in 1,614,222 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P117L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00027 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

FANCF
NM_022725.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1B:4

Conservation

PhyloP100: 3.53

Publications

7 publications found

Variant links:

Genes affected

FANCF (HGNC:3587): (FA complementation group F) The Fanconi anemia complementation group (FANC) currently includes FANCA, FANCB, FANCC, FANCD1 (also called BRCA2), FANCD2, FANCE, FANCF, FANCG, FANCI, FANCJ (also called BRIP1), FANCL, FANCM and FANCN (also called PALB2). The previously defined group FANCH is the same as FANCA. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersensitivity to DNA crosslinking agents, increased chromosomal breakage, and defective DNA repair. The members of the Fanconi anemia complementation group do not share sequence similarity; they are related by their assembly into a common nuclear protein complex. This gene encodes the protein for complementation group F. [provided by RefSeq, Jul 2008]

FANCF links:

GAS2 (HGNC:4167): (growth arrest specific 2) The protein encoded by this gene is a caspase-3 substrate that plays a role in regulating microfilament and cell shape changes during apoptosis. It can also modulate cell susceptibility to p53-dependent apoptosis by inhibiting calpain activity. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2017]

GAS2 Gene-Disease associations (from GenCC):

hearing loss disorder
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
hearing loss, autosomal recessive 125
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

GAS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008955479).

BP6

Variant 11-22625462-G-T is Benign according to our data. Variant chr11-22625462-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 241438.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000269 (41/152376) while in subpopulation EAS AF = 0.00406 (21/5178). AF 95% confidence interval is 0.00272. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022725.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FANCF	NM_022725.4	MANE Select	c.349C>A	p.Pro117Thr	missense	Exon 1 of 1	NP_073562.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FANCF	ENST00000327470.6	TSL:6 MANE Select	c.349C>A	p.Pro117Thr	missense	Exon 1 of 1	ENSP00000330875.3
GAS2	ENST00000528582.5	TSL:3	c.-372G>T		upstream_gene	N/A	ENSP00000432584.1
GAS2	ENST00000648096.1		n.-47G>T		upstream_gene	N/A

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152258

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000964

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00405

Gnomad SAS

AF:

0.00310

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000251

AC:

AN:

250682

AF XY:

0.000287

show subpopulations

Gnomad AFR exome

AF:

0.0000624

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00223

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000113

AC:

165

AN:

1461846

Hom.:

Cov.:

AF XY:

0.000132

AC XY:

AN XY:

727226

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00123

AC:

AN:

39700

South Asian (SAS)

AF:

0.000707

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1112006

Other (OTH)

AF:

0.000811

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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:

0.000269

AC:

AN:

152376

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74508

show subpopulations

African (AFR)

AF:

0.0000962

AC:

AN:

41598

American (AMR)

AF:

0.0000653

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00406

AC:

AN:

5178

South Asian (SAS)

AF:

0.00310

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000116

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.000214

AC:

Asia WGS

AF:

0.00779

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Oct 24, 2019

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Mar 03, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: FANCF c.349C>A (p.Pro117Thr) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00013 in 1607248 control chromosomes, predominantly at a frequency of 0.0016 within the East Asian subpopulation in the gnomAD database, including 1 homozygote. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 4.5-fold of the estimated maximal expected allele frequency for a pathogenic variant in FANCF causing Fanconi Anemia phenotype (0.0004). However, in certain East Asian subpopulations, e.g. in Southeast Asians the variant was found with much higher allele frequency (i.e. 26 / 692 alleles, AF: 0.038; in the GenomeAsia 100K database), further supporting that the variant is likely a benign polymorphism. To our knowledge, no occurrence of c.349C>A in individuals affected with Fanconi Anemia has been reported. At least one publication reported experimental evidence evaluating an impact on protein function, and demonstrated reduced function (Pouliot_2019), however these results do not allow convincing conclusions about the variant effect. The following publication have been ascertained in the context of this evaluation (PMID: 31721781). ClinVar contains an entry for this variant (Variation ID: 241438). Based on the evidence outlined above, the variant was classified as likely benign.

Ovarian cancer

Pathogenic:1

Jan 01, 2022

Laboratory of Molecular Epidemiology of Birth Defects, West China Second University Hospital, Sichuan University

Significance:Likely pathogenic

Review Status:flagged submission

Collection Method:clinical testing

Fanconi anemia complementation group F

Benign:1

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Fanconi anemia

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

FANCF-related disorder

Benign:1

Dec 26, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This 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 v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.24

Eigen

Benign

-0.052

Eigen_PC

Benign

-0.19

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.57

M_CAP

Benign

0.020

MetaRNN

Benign

0.0090

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.5

PhyloP100

3.5

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-3.1

REVEL

Benign

0.087

Sift

Uncertain

0.018

Sift4G

Pathogenic

0.0

Polyphen

0.99

Vest4

0.17

MutPred

0.31

Loss of loop (P = 0.0112)

MVP

0.68

MPC

0.92

ClinPred

0.061

GERP RS

4.3

PromoterAI

0.017

Neutral

(source)

Varity_R

0.18

gMVP

0.17

Mutation Taster

=87/13

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over