rs749500174

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_020975.6(RET):​c.296G>A​(p.Arg99Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000261 in 1,609,350 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R99W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

RET
NM_020975.6 missense

Scores

1
18

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.198

Publications

2 publications found
Variant links:
Genes affected
RET (HGNC:9967): (ret proto-oncogene) This gene encodes a transmembrane receptor and member of the tyrosine protein kinase family of proteins. Binding of ligands such as GDNF (glial cell-line derived neurotrophic factor) and other related proteins to the encoded receptor stimulates receptor dimerization and activation of downstream signaling pathways that play a role in cell differentiation, growth, migration and survival. The encoded receptor is important in development of the nervous system, and the development of organs and tissues derived from the neural crest. This proto-oncogene can undergo oncogenic activation through both cytogenetic rearrangement and activating point mutations. Mutations in this gene are associated with Hirschsprung disease and central hypoventilation syndrome and have been identified in patients with renal agenesis. [provided by RefSeq, Sep 2017]
RET Gene-Disease associations (from GenCC):
  • familial medullary thyroid carcinoma
    Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
  • multiple endocrine neoplasia type 2A
    Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P
  • multiple endocrine neoplasia type 2B
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
  • pheochromocytoma
    Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
  • Hirschsprung disease, susceptibility to, 1
    Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • Haddad syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Hirschsprung disease
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • renal agenesis, unilateral
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • bilateral renal agenesis
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • renal agenesis
    Inheritance: AR Classification: LIMITED Submitted by: G2P

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.061314285).
BP6
Variant 10-43100681-G-A is Benign according to our data. Variant chr10-43100681-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 241354.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RETNM_020975.6 linkc.296G>A p.Arg99Gln missense_variant Exon 2 of 20 ENST00000355710.8 NP_066124.1 P07949-1A0A024R7T2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RETENST00000355710.8 linkc.296G>A p.Arg99Gln missense_variant Exon 2 of 20 5 NM_020975.6 ENSP00000347942.3 P07949-1

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152176
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
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:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000125
AC:
3
AN:
239112
AF XY:
0.0000154
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000281
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000268
AC:
39
AN:
1457174
Hom.:
0
Cov.:
64
AF XY:
0.0000317
AC XY:
23
AN XY:
724504
show subpopulations
African (AFR)
AF:
0.0000898
AC:
3
AN:
33408
American (AMR)
AF:
0.00
AC:
0
AN:
44114
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25954
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39524
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85542
European-Finnish (FIN)
AF:
0.0000190
AC:
1
AN:
52640
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5746
European-Non Finnish (NFE)
AF:
0.0000315
AC:
35
AN:
1110046
Other (OTH)
AF:
0.00
AC:
0
AN:
60200
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
3
6
9
12
15
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
0.0000197
AC:
3
AN:
152176
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74338
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41440
American (AMR)
AF:
0.0000655
AC:
1
AN:
15278
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5190
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68038
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.575
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000151
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Multiple endocrine neoplasia, type 2 Uncertain:1
Jul 21, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 99 of the RET protein (p.Arg99Gln). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with RET-related conditions. ClinVar contains an entry for this variant (Variation ID: 241354). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Benign". The glutamine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect 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. -

not provided Uncertain:1
Dec 15, 2023
Quest Diagnostics Nichols Institute San Juan Capistrano
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Hereditary cancer-predisposing syndrome Benign:1
Oct 03, 2019
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.063
BayesDel_addAF
Benign
-0.22
T
BayesDel_noAF
Benign
-0.56
CADD
Benign
15
DANN
Benign
0.86
DEOGEN2
Uncertain
0.43
T;.;.
Eigen
Benign
-1.6
Eigen_PC
Benign
-1.6
FATHMM_MKL
Benign
0.11
N
LIST_S2
Benign
0.81
T;T;T
M_CAP
Benign
0.039
D
MetaRNN
Benign
0.061
T;T;T
MetaSVM
Benign
-0.92
T
MutationAssessor
Benign
-0.11
N;.;N
PhyloP100
0.20
PrimateAI
Benign
0.18
T
PROVEAN
Benign
-0.35
N;.;N
REVEL
Benign
0.24
Sift
Benign
0.66
T;.;T
Sift4G
Benign
0.66
T;T;T
Polyphen
0.0080
B;.;B
Vest4
0.038
MutPred
0.26
Gain of catalytic residue at R99 (P = 0.1516);Gain of catalytic residue at R99 (P = 0.1516);Gain of catalytic residue at R99 (P = 0.1516);
MVP
0.49
MPC
0.87
ClinPred
0.016
T
GERP RS
-7.4
PromoterAI
-0.0081
Neutral
Varity_R
0.055
gMVP
0.50
Mutation Taster
=81/19
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs749500174; hg19: chr10-43596129; COSMIC: COSV106502127; API