Genetic Variant FOLH1:p.Glu703Lys (chr11-49146902-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_004476.3(FOLH1):c.2107G>A(p.Glu703Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,460,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FOLH1
NM_004476.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.01

Variant links:

Genes affected

FOLH1 (HGNC:3788): (folate hydrolase 1) This gene encodes a type II transmembrane glycoprotein belonging to the M28 peptidase family. The protein acts as a glutamate carboxypeptidase on different alternative substrates, including the nutrient folate and the neuropeptide N-acetyl-l-aspartyl-l-glutamate and is expressed in a number of tissues such as prostate, central and peripheral nervous system and kidney. A mutation in this gene may be associated with impaired intestinal absorption of dietary folates, resulting in low blood folate levels and consequent hyperhomocysteinemia. Expression of this protein in the brain may be involved in a number of pathological conditions associated with glutamate excitotoxicity. In the prostate the protein is up-regulated in cancerous cells and is used as an effective diagnostic and prognostic indicator of prostate cancer. This gene likely arose from a duplication event of a nearby chromosomal region. Alternative splicing gives rise to multiple transcript variants encoding several different isoforms. [provided by RefSeq, Jul 2010]

FOLH1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3486051).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FOLH1	NM_004476.3 link	c.2107G>A	p.Glu703Lys	missense_variant	Exon 19 of 19	ENST00000256999.7	NP_004467.1	Q04609-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FOLH1	ENST00000256999.7 link	c.2107G>A	p.Glu703Lys	missense_variant	Exon 19 of 19	1	NM_004476.3	ENSP00000256999.2		Q04609-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250380

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135312

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460892

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726760

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2107G>A (p.E703K) alteration is located in exon 19 (coding exon 19) of the FOLH1 gene. This alteration results from a G to A substitution at nucleotide position 2107, causing the glutamic acid (E) at amino acid position 703 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.024

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

T;.;.;.

Eigen

Benign

0.13

Eigen_PC

Benign

0.14

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.97

D;D;D;D

M_CAP

Benign

0.018

MetaRNN

Benign

0.35

T;T;T;T

MetaSVM

Benign

-0.78

MutationAssessor

Uncertain

2.2

M;.;.;.

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-2.0

N;N;N;N

REVEL

Benign

0.17

Sift

Benign

0.033

D;T;D;T

Sift4G

Benign

0.65

T;T;T;T

Polyphen

0.38

B;B;P;P

Vest4

0.55

MutPred

0.67

Gain of ubiquitination at E703 (P = 0.017);.;.;.;

MVP

0.63

MPC

2.2

ClinPred

0.84

GERP RS

3.3

Varity_R

0.27

gMVP

0.87

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over