9-109149647-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6_Very_StrongBP7

The NM_014334.4(FRRS1L):c.312G>A(p.Lys104Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000676 in 1,611,392 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00070 ( 1 hom. )

Consequence

FRRS1L
NM_014334.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.38

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

developmental and epileptic encephalopathy, 37
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

FRRS1L links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.23).

BP6

Variant 9-109149647-C-T is Benign according to our data. Variant chr9-109149647-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 476303.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.38 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014334.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FRRS1L	NM_014334.4	MANE Select	c.312G>A	p.Lys104Lys	synonymous	Exon 2 of 5	NP_055149.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FRRS1L	ENST00000561981.5	TSL:1 MANE Select	c.312G>A	p.Lys104Lys	synonymous	Exon 2 of 5	ENSP00000477141.2
FRRS1L	ENST00000642157.1		n.2547G>A		non_coding_transcript_exon	Exon 1 of 3
FRRS1L	ENST00000642299.1		n.*159G>A		non_coding_transcript_exon	Exon 3 of 5	ENSP00000495137.1

Frequencies

GnomAD3 genomes

AF:

0.000486

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000808

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000549

AC:

138

AN:

251268

AF XY:

0.000523

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000666

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000678

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000696

AC:

1016

AN:

1459086

Hom.:

Cov.:

AF XY:

0.000702

AC XY:

510

AN XY:

726068

show subpopulations

African (AFR)

AF:

0.000150

AC:

AN:

33422

American (AMR)

AF:

0.000716

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.00128

AC:

110

AN:

86176

European-Finnish (FIN)

AF:

0.0000562

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.000521

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.000748

AC:

830

AN:

1109522

Other (OTH)

AF:

0.000531

AC:

AN:

60290

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

133

178

222

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

128

160

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000486

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000443

AC XY:

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41562

American (AMR)

AF:

0.000457

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00145

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000808

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000556

Hom.:

Bravo

AF:

0.000604

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000872

EpiControl

AF:

0.000711

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Dec 17, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jul 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

FRRS1L: BP4, BP7

Developmental and epileptic encephalopathy, 37

Benign:1

Jan 17, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.23

CADD

Benign

9.5

(source)

DANN

Benign

0.65

PhyloP100

1.4

Mutation Taster

=99/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over