3-10035158-CTTT-CTTTTT

Position:

• chr3-10035158-CTTT-CTTTTT

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001018115.3(FANCD2):​c.378-6_378-5dup variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000488 in 1,435,516 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. There are indicators that this mutation may affect the branch point..

• Frequency:
  • Genomes: 𝑓 0.0000067 (0 hom., cov: 25)
  • Exomes 𝑓: 0.0000047 (0 hom.)
• Consequence: FANCD2 NM_001018115.3 splice_polypyrimidine_tract, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.334

Genes affected

FANCD2 (HGNC:3585): (FA complementation group D2) 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 D2. This protein is monoubiquinated in response to DNA damage, resulting in its localization to nuclear foci with other proteins (BRCA1 AND BRCA2) involved in homology-directed DNA repair. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCD2	NM_001018115.3	c.378-6_378-5dup		splice_polypyrimidine_tract_variant, intron_variant		ENST00000675286.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCD2	ENST00000675286.1	c.378-6_378-5dup		splice_polypyrimidine_tract_variant, intron_variant			NM_001018115.3	P2

Frequencies

GnomAD3 genomes AF: 0.00000668 AC: 1 AN: 149632 Hom.: 0 Cov.: 25

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000668

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000165 AC: 3 AN: 181326 Hom.: 0 AF XY: 0.0000307 AC XY: 3 AN XY: 97648

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000129

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000467 AC: 6 AN: 1285884 Hom.: 0 Cov.: 21 AF XY: 0.00000469 AC XY: 3 AN XY: 640166

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000753

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000306

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000668 AC: 1 AN: 149632 Hom.: 0 Cov.: 25 AF XY: 0.00 AC XY: 0 AN XY: 73030

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000668

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BranchPoint Hunter		1.0

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs55973240; hg19: chr3-10076842;