rs1554026745

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001034850.3(RETREG1):​c.210G>T​(p.Trp70Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. W70R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

RETREG1
NM_001034850.3 missense

Scores

1
2
15

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.978

Publications

0 publications found
Variant links:
Genes affected
RETREG1 (HGNC:25964): (reticulophagy regulator 1) The protein encoded by this gene is a cis-Golgi transmembrane protein that may be necessary for the long-term survival of nociceptive and autonomic ganglion neurons. Mutations in this gene are a cause of hereditary sensory and autonomic neuropathy type IIB (HSAN IIB), and this gene may also play a role in susceptibility to vascular dementia. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Nov 2011]
RETREG1-AS1 (HGNC:55551): (RETREG1 antisense RNA 1)

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.35089612).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RETREG1NM_001034850.3 linkc.210G>T p.Trp70Cys missense_variant Exon 1 of 9 ENST00000306320.10 NP_001030022.1 Q9H6L5-1
RETREG1XM_011514053.4 linkc.210G>T p.Trp70Cys missense_variant Exon 1 of 10 XP_011512355.1
RETREG1-AS1NR_109946.1 linkn.561+276C>A intron_variant Intron 1 of 3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RETREG1ENST00000306320.10 linkc.210G>T p.Trp70Cys missense_variant Exon 1 of 9 1 NM_001034850.3 ENSP00000304642.9 Q9H6L5-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1406564
Hom.:
0
Cov.:
29
AF XY:
0.00
AC XY:
0
AN XY:
696908
African (AFR)
AF:
0.00
AC:
0
AN:
31504
American (AMR)
AF:
0.00
AC:
0
AN:
39402
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25176
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36850
South Asian (SAS)
AF:
0.00
AC:
0
AN:
81472
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
35966
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5480
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1092128
Other (OTH)
AF:
0.00
AC:
0
AN:
58586
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Oct 12, 2021
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.210G>T (p.W70C) alteration is located in exon 1 (coding exon 1) of the FAM134B gene. This alteration results from a G to T substitution at nucleotide position 210, causing the tryptophan (W) at amino acid position 70 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1
Sep 24, 2017
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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 do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with FAM134B-related disease. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change replaces tryptophan with cysteine at codon 70 of the FAM134B protein (p.Trp70Cys). The tryptophan residue is weakly conserved and there is a large physicochemical difference between tryptophan and cysteine. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.33
BayesDel_addAF
Benign
-0.090
T
BayesDel_noAF
Benign
-0.37
CADD
Uncertain
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.020
T
Eigen
Benign
-0.17
Eigen_PC
Benign
-0.24
FATHMM_MKL
Benign
0.45
N
LIST_S2
Benign
0.64
T
M_CAP
Uncertain
0.094
D
MetaRNN
Benign
0.35
T
MetaSVM
Benign
-1.1
T
PhyloP100
0.98
PrimateAI
Pathogenic
0.85
D
PROVEAN
Benign
-1.2
N
REVEL
Benign
0.22
Sift
Benign
0.072
T
Sift4G
Benign
0.12
T
Polyphen
0.99
D
Vest4
0.39
MutPred
0.67
Gain of catalytic residue at L71 (P = 0.0097);
MVP
0.42
MPC
1.4
ClinPred
0.60
D
GERP RS
2.8
PromoterAI
-0.037
Neutral
Varity_R
0.20
gMVP
0.49
Mutation Taster
=86/14
polymorphism

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

Other links and lift over

dbSNP: rs1554026745; hg19: chr5-16616871; API