chr16-89791280-G-C

Variant names:

• chr16-89791280-G-C
• rs17232609
• NM_000135.4:c.1359+123C>G

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_000135.4(FANCA):​c.1359+123C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000959 in 1,359,520 control chromosomes in the GnomAD database, including 27 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0018 (4 hom., cov: 31)
  • Exomes 𝑓: 0.00085 (23 hom.)
• Consequence: FANCA NM_000135.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.223
• Publications: 0 publications found

Genes affected

FANCA (HGNC:3582): (FA complementation group A) 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 A. Alternative splicing results in multiple transcript variants encoding different isoforms. Mutations in this gene are the most common cause of Fanconi anemia. [provided by RefSeq, Jul 2008]

FANCA Gene-Disease associations (from GenCC):

• Fanconi anemia complementation group A

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

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BP6: Variant 16-89791280-G-C is Benign according to our data. Variant chr16-89791280-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 210971.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00185 (281/152198) while in subpopulation AMR AF = 0.0163 (249/15270). AF 95% confidence interval is 0.0146. There are 4 homozygotes in GnomAd4. There are 156 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FANCA	NM_000135.4	c.1359+123C>G		intron_variant	Intron 14 of 42	ENST00000389301.8	NP_000126.2
FANCA	NM_001286167.3	c.1359+123C>G		intron_variant	Intron 14 of 42		NP_001273096.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FANCA	ENST00000389301.8	c.1359+123C>G		intron_variant	Intron 14 of 42	1	NM_000135.4	ENSP00000373952.3

Frequencies

GnomAD3 genomes AF: 0.00181 AC: 276 AN: 152080 Hom.: 3 Cov.: 31

Gnomad AFR AF: 0.000555

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0160

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00382

GnomAD4 exome AF: 0.000847 AC: 1023 AN: 1207322 Hom.: 23 Cov.: 17 AF XY: 0.000731 AC XY: 442 AN XY: 604250

African (AFR) AF: 0.000287 AC: 8 AN: 27900

American (AMR) AF: 0.0274 AC: 977 AN: 35592

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23960

East Asian (EAS) AF: 0.0000287 AC: 1 AN: 34896

South Asian (SAS) AF: 0.00 AC: 0 AN: 75368

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39542

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5224

European-Non Finnish (NFE) AF: 0.00000110 AC: 1 AN: 913100

Other (OTH) AF: 0.000696 AC: 36 AN: 51740

GnomAD4 genome AF: 0.00185 AC: 281 AN: 152198 Hom.: 4 Cov.: 31 AF XY: 0.00210 AC XY: 156 AN XY: 74414

African (AFR) AF: 0.000554 AC: 23 AN: 41542

American (AMR) AF: 0.0163 AC: 249 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.000208 AC: 1 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68010

Other (OTH) AF: 0.00378 AC: 8 AN: 2114

Alfa AF: 0.0000695 Hom.: 0

Bravo AF: 0.00343

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Apr 11, 2015

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	2.6
DANN	Benign	0.50
PhyloP100		0.22
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs17232609; hg19: chr16-89857688;