rs73889319

Variant names:

• chr3-192403247-A-G
• rs73889319
• NM_004113.6:c.14-42709T>C

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BS1 BS2

The NM_004113.6(FGF12):​c.14-42709T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0052 in 152,240 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0052 (9 hom., cov: 33)
• Consequence: FGF12 NM_004113.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.503
• Publications: 1 publications found

Genes affected

FGF12 (HGNC:3668): (fibroblast growth factor 12) The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members possess broad mitogenic and cell survival activities, and are involved in a variety of biological processes, including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth, and invasion. This growth factor lacks the N-terminal signal sequence present in most of the FGF family members, but it contains clusters of basic residues that have been demonstrated to act as a nuclear localization signal. When transfected into mammalian cells, this protein accumulated in the nucleus, but was not secreted. The specific function of this gene has not yet been determined. [provided by RefSeq, Dec 2019]

FGF12 Gene-Disease associations (from GenCC):

• developmental and epileptic encephalopathy, 47

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• undetermined early-onset epileptic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0052 (791/152240) while in subpopulation AFR AF = 0.0185 (767/41564). AF 95% confidence interval is 0.0174. There are 9 homozygotes in GnomAd4. There are 359 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High AC in GnomAd4 at 791 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGF12	NM_004113.6	c.14-42709T>C		intron_variant	Intron 2 of 5	ENST00000445105.7	NP_004104.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FGF12	ENST00000445105.7	c.14-42709T>C		intron_variant	Intron 2 of 5	1	NM_004113.6	ENSP00000393686.1

Frequencies

GnomAD3 genomes AF: 0.00519 AC: 790 AN: 152124 Hom.: 9 Cov.: 33

Gnomad AFR AF: 0.0185

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000982

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: 0.0000441

Gnomad OTH AF: 0.00287

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00520 AC: 791 AN: 152240 Hom.: 9 Cov.: 33 AF XY: 0.00482 AC XY: 359 AN XY: 74438

African (AFR) AF: 0.0185 AC: 767 AN: 41564

American (AMR) AF: 0.000980 AC: 15 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10596

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

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 67986

Other (OTH) AF: 0.00284 AC: 6 AN: 2114

Alfa AF: 0.00388 Hom.: 0

Bravo AF: 0.00581

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	8.8
DANN	Benign	0.51
PhyloP100		-0.50
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.28		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.28		Position offset: -28

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

Other links and lift over

dbSNP: rs73889319; hg19: chr3-192121036;