9-95247480-C-T

Variant names:

• chr9-95247480-C-T
• rs777111154
• NM_000136.3:c.202G>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000136.3(FANCC):​c.202G>A​(p.Gly68Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G68R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FANCC NM_000136.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.29
• Publications: 0 publications found

Genes affected

FANCC (HGNC:3584): (FA complementation group C) 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 C. [provided by RefSeq, Jul 2008]

FANCC Gene-Disease associations (from GenCC):

• Fanconi anemia complementation group C

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Myriad Women’s Health
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• colorectal cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• malignant pancreatic neoplasm

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• ovarian cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• prostate cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• breast cancer

  Inheritance: AD Classification: NO_KNOWN Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.9

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FANCC	NM_000136.3	c.202G>A	p.Gly68Ser	missense_variant	Exon 3 of 15	ENST00000289081.8	NP_000127.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FANCC	ENST00000289081.8	c.202G>A	p.Gly68Ser	missense_variant	Exon 3 of 15	1	NM_000136.3	ENSP00000289081.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Fanconi anemia complementation group C Uncertain:1

Jul 02, 2018

Mendelics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Uncertain:1

Mar 27, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in an individual with breast cancer (PMID: 35264596); This variant is associated with the following publications: (PMID: Gordon2000[Book], 35264596) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Uncertain	0.053	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.48	T;T;T;.;T;.;.
Eigen	Uncertain	0.30
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.86	.;D;D;D;D;D;D
M_CAP	Benign	0.017	T
MetaRNN	Pathogenic	0.90	D;D;D;D;D;D;D
MetaSVM	Benign	-0.73	T
MutationAssessor	Uncertain	2.2	M;M;.;.;.;.;.
PhyloP100		2.3
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-4.2	D;D;.;.;D;.;.
REVEL	Benign	0.27
Sift	Uncertain	0.017	D;D;.;.;D;.;.
Sift4G	Uncertain	0.036	D;D;D;.;T;.;.
Polyphen		0.71	P;P;.;.;P;.;.
Vest4		0.53
MutPred		0.85		Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);Loss of ubiquitination at K73 (P = 0.0982);
MVP		0.75
MPC		0.17
ClinPred		0.99	D
GERP RS		3.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.44
gMVP		0.65
Mutation Taster		=81/19	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs777111154; hg19: chr9-98009762;