Genetic Variant NM_001034850.3:c.964T>C (chr5-16477698-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001034850.3(RETREG1):c.964T>C(p.Ser322Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Consequence

RETREG1
NM_001034850.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.54

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 Gene-Disease associations (from GenCC):

neuropathy, hereditary sensory and autonomic, type 2B
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
hereditary sensory and autonomic neuropathy type 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

RETREG1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.851

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001034850.3. 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
	RETREG1	NM_001034850.3	MANE Select	c.964T>C	p.Ser322Pro	missense	Exon 8 of 9	NP_001030022.1
	RETREG1	NM_019000.5		c.541T>C	p.Ser181Pro	missense	Exon 6 of 7	NP_061873.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
RETREG1	ENST00000306320.10	TSL:1 MANE Select	c.964T>C	p.Ser322Pro	missense	Exon 8 of 9	ENSP00000304642.9
RETREG1	ENST00000399793.6	TSL:1	c.541T>C	p.Ser181Pro	missense	Exon 6 of 7	ENSP00000382691.2
RETREG1	ENST00000510362.6	TSL:1	n.439T>C		non_coding_transcript_exon	Exon 6 of 8	ENSP00000425089.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Sep 13, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant has not been reported in the literature in individuals affected with FAM134B-related conditions. This sequence change replaces serine, which is neutral and polar, with proline, which is neutral and non-polar, at codon 322 of the FAM134B protein (p.Ser322Pro). This variant is not present in population databases (gnomAD no frequency). ClinVar contains an entry for this variant (Variation ID: 538134). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt FAM134B protein function. 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.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.34

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.36

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.87

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.91

M_CAP

Uncertain

0.093

MetaRNN

Pathogenic

0.85

MetaSVM

Uncertain

0.27

PhyloP100

8.5

PrimateAI

Uncertain

0.74

PROVEAN

Pathogenic

-4.6

REVEL

Uncertain

0.55

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.97

MutPred

0.15

Loss of glycosylation at S322 (P = 0.0335)

MVP

0.93

MPC

1.2

ClinPred

0.99

GERP RS

6.0

Varity_R

0.92

gMVP

0.42

Mutation Taster

=54/46

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over