rs77374493

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_020937.4(FANCM):c.527C>T(p.Thr176Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00438 in 1,612,766 control chromosomes in the GnomAD database, including 31 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict 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. T176P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0036 ( 4 hom., cov: 32)

Exomes 𝑓: 0.0045 ( 27 hom. )

Consequence

FANCM
NM_020937.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: -0.775

Publications

14 publications found

Variant links:

COSMIC-nc: COSV53532793

Genes affected

FANCM (HGNC:23168): (FA complementation group M) 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 M. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

FANCM Gene-Disease associations (from GenCC):

Fanconi anemia
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: G2P, Orphanet
spermatogenic failure 28
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
male infertility with azoospermia or oligozoospermia due to single gene mutation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
breast cancer
Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics

FANCM links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008818626).

BP6

Variant 14-45137087-C-T is Benign according to our data. Variant chr14-45137087-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 313193.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00364 (555/152320) while in subpopulation NFE AF = 0.00479 (326/68028). AF 95% confidence interval is 0.00436. There are 4 homozygotes in GnomAd4. There are 280 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FANCM	NM_020937.4 link	c.527C>T	p.Thr176Ile	missense_variant	Exon 2 of 23	ENST00000267430.10	NP_065988.1	Q8IYD8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FANCM	ENST00000267430.10 link	c.527C>T	p.Thr176Ile	missense_variant	Exon 2 of 23	1	NM_020937.4	ENSP00000267430.5		Q8IYD8-1

Frequencies

GnomAD3 genomes

AF:

0.00365

AC:

555

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000676

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00268

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.0136

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00479

Gnomad OTH

AF:

0.00383

GnomAD2 exomes

AF:

0.00419

AC:

1054

AN:

251302

AF XY:

0.00421

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.00223

Gnomad ASJ exome

AF:

0.000794

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0133

Gnomad NFE exome

AF:

0.00534

Gnomad OTH exome

AF:

0.00408

GnomAD4 exome

AF:

0.00446

AC:

6507

AN:

1460446

Hom.:

Cov.:

AF XY:

0.00437

AC XY:

3179

AN XY:

726700

show subpopulations

African (AFR)

AF:

0.000628

AC:

AN:

33422

American (AMR)

AF:

0.00228

AC:

102

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.000383

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39664

South Asian (SAS)

AF:

0.00183

AC:

158

AN:

86238

European-Finnish (FIN)

AF:

0.0122

AC:

652

AN:

53236

Middle Eastern (MID)

AF:

0.00557

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.00474

AC:

5267

AN:

1110938

Other (OTH)

AF:

0.00439

AC:

265

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

303

606

908

1211

1514

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

198

396

594

792

990

<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:

0.00364

AC:

555

AN:

152320

Hom.:

Cov.:

AF XY:

0.00376

AC XY:

280

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.000674

AC:

AN:

41564

American (AMR)

AF:

0.00268

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00104

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.0136

AC:

144

AN:

10614

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00479

AC:

326

AN:

68028

Other (OTH)

AF:

0.00379

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

111

139

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.00410

Hom.:

Bravo

AF:

0.00296

TwinsUK

AF:

0.00485

AC:

ALSPAC

AF:

0.00337

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00512

AC:

ExAC

AF:

0.00437

AC:

531

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.00556

EpiControl

AF:

0.00676

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:2

Jun 06, 2021

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Aug 30, 2019

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Jun 14, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

FANCM: BP4, BS2 -

Spermatogenic failure 28

Uncertain:1

Dec 01, 2020

Baylor Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Fanconi anemia

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

FANCM-related disorder

Benign:1

May 08, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.65

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.12

.;T;.

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.079

LIST_S2

Benign

0.68

T;T;T

MetaRNN

Benign

0.0088

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L;L

PhyloP100

-0.78

PrimateAI

Benign

0.39

PROVEAN

Uncertain

-3.4

D;D;D

REVEL

Benign

0.030

Sift

Benign

0.19

T;T;T

Sift4G

Benign

0.24

T;T;T

Polyphen

0.0

B;B;.

Vest4

0.050

MVP

0.42

MPC

0.093

ClinPred

0.014

GERP RS

3.1

Varity_R

0.21

gMVP

0.17

Mutation Taster

=97/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over