Variant chr9-109167030-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_014334.4(FRRS1L):c.109C>T(p.Pro37Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,210,538 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P37A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 25)

Exomes 𝑓: 0.0000019 ( 0 hom. )

Consequence

FRRS1L
NM_014334.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0380

Variant links:

Genes affected

FRRS1L (HGNC:1362): (ferric chelate reductase 1 like) This gene encodes a component of the outer-core of an alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor protein in the brain. The encoded protein is thought to interact with inner-core components of the receptor, and play a role in the modulation of glutamate signaling. Mutations in this gene are associated with early infantile epileptic encephalopathy 37. [provided by RefSeq, Jul 2016]

FRRS1L links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.070938855).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FRRS1L	NM_014334.4 linkuse as main transcript	c.109C>T	p.Pro37Ser	missense_variant	1/5	ENST00000561981.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FRRS1L	ENST00000561981.5 linkuse as main transcript	c.109C>T	p.Pro37Ser	missense_variant	1/5	1	NM_014334.4	P1
FRRS1L	ENST00000644747.1 linkuse as main transcript			upstream_gene_variant

Frequencies

GnomAD3 genomes

AF:

0.00000671

AC:

AN:

149036

Hom.:

Cov.:

show subpopulations

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:

0.0000150

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000188

AC:

AN:

1061502

Hom.:

Cov.:

AF XY:

0.00000198

AC XY:

AN XY:

505484

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:

0.00000220

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000671

AC:

AN:

149036

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

72634

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000150

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Developmental and epileptic encephalopathy, 37

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 29, 2022

This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 88 of the FRRS1L protein (p.Pro88Ser). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 542873). This variant has not been reported in the literature in individuals affected with FRRS1L-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the gnomAD database. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.018

Eigen

Benign

-0.88

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.023

LIST_S2

Benign

0.44

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.071

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.4

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.87

Sift4G

Benign

0.45

Polyphen

0.0020

Vest4

0.15

MutPred

0.25

Gain of glycosylation at P88 (P = 0.0062);

MVP

0.23

MPC

0.29

ClinPred

0.25

GERP RS

0.34

Varity_R

0.13

gMVP

0.36

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