chr8-16992989-C-T

Variant names:

• chr8-16992989-C-T
• rs1721100
• NM_019851.3:c.*83G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_019851.3(FGF20):​c.*83G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. 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 0.0 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FGF20 NM_019851.3 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.947
• Publications: 38 publications found

Genes affected

FGF20 (HGNC:3677): (fibroblast growth factor 20) The protein encoded by this gene is a member of the fibroblast growth factor family. The fibroblast growth factors 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 gene product is a secreted neurotrophic factor but lacks a typical signal peptide. It is expressed in normal brain, particularly the cerebellum, and may regulate central nervous system development and function. Homodimerization of this protein was shown to regulate its receptor binding activity and concentration gradient in the extracellular matrix. Genetic variations of this gene have been associated with Parkinson disease susceptibility. [provided by RefSeq, Oct 2009]

FGF20 Gene-Disease associations (from GenCC):

• bilateral renal agenesis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• renal hypodysplasia/aplasia 2

  Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019851.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FGF20	NM_019851.3	MANE Select	c.*83G>A		3_prime_UTR	Exon 3 of 3	NP_062825.1	Q9NP95

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FGF20	ENST00000180166.6	TSL:1 MANE Select	c.*83G>A		3_prime_UTR	Exon 3 of 3	ENSP00000180166.5	Q9NP95
	FGF20	ENST00000519941.1	TSL:5	c.*83G>A		3_prime_UTR	Exon 2 of 2	ENSP00000428072.1	H0YAT9

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 151860 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1334194 Hom.: 0 Cov.: 19 AF XY: 0.00 AC XY: 0 AN XY: 660058

African (AFR) AF: 0.00 AC: 0 AN: 29746

American (AMR) AF: 0.00 AC: 0 AN: 32506

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 21330

East Asian (EAS) AF: 0.00 AC: 0 AN: 38746

South Asian (SAS) AF: 0.00 AC: 0 AN: 71414

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 44810

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5320

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1034762

Other (OTH) AF: 0.00 AC: 0 AN: 55560

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 151860 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74134

African (AFR) AF: 0.00 AC: 0 AN: 41316

American (AMR) AF: 0.00 AC: 0 AN: 15228

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5168

South Asian (SAS) AF: 0.00 AC: 0 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10548

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67994

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 4202

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	5.1
DANN	Benign	0.47
PhyloP100		0.95

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1721100; hg19: chr8-16850498;