Genetic Variant NM_173828.5:c.442C>T (chr5-141639588-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_173828.5(RELL2):c.442C>T(p.Arg148Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000979 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

RELL2
NM_173828.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.962

Variant links:

Genes affected

RELL2 (HGNC:26902): (RELT like 2) Predicted to enable collagen binding activity. Involved in positive regulation of p38MAPK cascade. Predicted to be located in extracellular matrix. [provided by Alliance of Genome Resources, Apr 2022]

RELL2 links:

FCHSD1 (HGNC:25463): (FCH and double SH3 domains 1) Predicted to enable lipid binding activity. Predicted to be involved in neuromuscular synaptic transmission and positive regulation of actin filament polymerization. Predicted to be located in cell projection and perikaryon. Predicted to be active in neuromuscular junction and recycling endosome. Predicted to colocalize with cuticular plate. [provided by Alliance of Genome Resources, Apr 2022]

FCHSD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RELL2	NM_173828.5 link	c.442C>T	p.Arg148Cys	missense_variant	Exon 4 of 7	ENST00000297164.8	NP_776189.3	Q8NC24
FCHSD1	NM_033449.3 link	c.*1910G>A		3_prime_UTR_variant	Exon 20 of 20	ENST00000435817.7	NP_258260.1	Q86WN1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RELL2	ENST00000297164.8 link	c.442C>T	p.Arg148Cys	missense_variant	Exon 4 of 7	1	NM_173828.5	ENSP00000297164.3		Q8NC24
FCHSD1	ENST00000435817 link	c.*1910G>A		3_prime_UTR_variant	Exon 20 of 20	1	NM_033449.3	ENSP00000399259.2		Q86WN1-1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000882

AC:

AN:

249310

Hom.:

AF XY:

0.0000741

AC XY:

AN XY:

135024

show subpopulations

Gnomad AFR exome

AF:

0.0000618

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000161

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000101

AC:

148

AN:

1461736

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

727164

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000812

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000122

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000167

Hom.:

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000906

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.442C>T (p.R148C) alteration is located in exon 4 (coding exon 4) of the RELL2 gene. This alteration results from a C to T substitution at nucleotide position 442, causing the arginine (R) at amino acid position 148 to be replaced by a cysteine (C). 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

Pathogenic

0.57

BayesDel_addAF

Benign

-0.013

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.090

T;.;T;.

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Benign

0.73

LIST_S2

Uncertain

0.95

D;D;.;D

M_CAP

Benign

0.059

MetaRNN

Uncertain

0.53

D;D;D;D

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.3

M;.;M;.

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-4.0

D;D;D;D

REVEL

Benign

0.22

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Uncertain

0.0040

D;D;D;D

Polyphen

1.0

D;D;D;.

Vest4

0.68

MVP

0.24

MPC

0.84

ClinPred

0.68

GERP RS

4.5

Varity_R

0.38

gMVP

0.34

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