Genetic Variant REEP3:p.Thr232Ile (chr10-63619784-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001001330.3(REEP3):c.695C>T(p.Thr232Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,456,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T232S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

REEP3
NM_001001330.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.47

Publications

0 publications found

Variant links:

Genes affected

REEP3 (HGNC:23711): (receptor accessory protein 3) Predicted to enable microtubule binding activity. Involved in mitotic nuclear membrane reassembly. Predicted to be integral component of membrane. Predicted to be active in cytoplasmic microtubule; endoplasmic reticulum membrane; and endoplasmic reticulum tubular network. [provided by Alliance of Genome Resources, Apr 2022]

REEP3 links:

LOC105378329 (HGNC:):

LOC105378329 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.038618386).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
REEP3	NM_001001330.3 link	c.695C>T	p.Thr232Ile	missense_variant	Exon 7 of 8	ENST00000373758.5	NP_001001330.1	Q6NUK4-1X5DR89
LOC105378329	XR_001747467.3 link	n.295+5035G>A		intron_variant	Intron 1 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
REEP3	ENST00000373758.5 link	c.695C>T	p.Thr232Ile	missense_variant	Exon 7 of 8	1	NM_001001330.3	ENSP00000362863.4	Q6NUK4-1
REEP3	ENST00000634963.1 link	n.*279C>T		non_coding_transcript_exon_variant	Exon 5 of 6	5		ENSP00000489394.1	A0A0U1RR85
REEP3	ENST00000634963.1 link	n.*279C>T		3_prime_UTR_variant	Exon 5 of 6	5		ENSP00000489394.1	A0A0U1RR85

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1456824

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723940

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33444

American (AMR)

AF:

0.00

AC:

AN:

44138

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26006

East Asian (EAS)

AF:

0.00

AC:

AN:

39618

South Asian (SAS)

AF:

0.00

AC:

AN:

84834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53160

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

9.01e-7

AC:

AN:

1109634

Other (OTH)

AF:

0.00

AC:

AN:

60226

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.057

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.51

CADD

Benign

(source)

DANN

Benign

0.68

DEOGEN2

Benign

0.0042

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.044

LIST_S2

Benign

0.68

M_CAP

Benign

0.026

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.91

MutationAssessor

Benign

-1.6

PhyloP100

1.5

PrimateAI

Benign

0.40

PROVEAN

Benign

0.62

REVEL

Benign

0.17

Sift

Benign

0.59

Sift4G

Benign

0.22

Polyphen

0.0

Vest4

0.12

MutPred

0.27

Loss of phosphorylation at T232 (P = 0.0074);

MVP

0.58

MPC

0.36

ClinPred

0.036

GERP RS

2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.025

gMVP

0.22

Mutation Taster

=97/3

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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10-63619784-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over