rs876657981

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2BP4_ModerateBS2

The NM_006912.6(RIT1):​c.604A>T​(p.Ser202Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

RIT1
NM_006912.6 missense

Scores

9
10

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.61

Publications

2 publications found
Variant links:
Genes affected
RIT1 (HGNC:10023): (Ras like without CAAX 1) This gene encodes a member of a subfamily of Ras-related GTPases. The encoded protein is involved in regulating p38 MAPK-dependent signaling cascades related to cellular stress. This protein also cooperates with nerve growth factor to promote neuronal development and regeneration. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]
RIT1 Gene-Disease associations (from GenCC):
  • Noonan syndrome
    Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
  • Noonan syndrome 8
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia, Genomics England PanelApp

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.23878428).
BS2
High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RIT1NM_006912.6 linkc.604A>T p.Ser202Cys missense_variant Exon 6 of 6 ENST00000368323.8 NP_008843.1 Q92963-1
RIT1NM_001256821.2 linkc.655A>T p.Ser219Cys missense_variant Exon 6 of 6 NP_001243750.1 Q92963-3
RIT1NM_001256820.2 linkc.496A>T p.Ser166Cys missense_variant Exon 5 of 5 NP_001243749.1 Q92963-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RIT1ENST00000368323.8 linkc.604A>T p.Ser202Cys missense_variant Exon 6 of 6 1 NM_006912.6 ENSP00000357306.3 Q92963-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1461878
Hom.:
0
Cov.:
31
AF XY:
0.00000550
AC XY:
4
AN XY:
727240
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000360
AC:
4
AN:
1112006
Other (OTH)
AF:
0.00
AC:
0
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.505
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
33
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Nov 13, 2015
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.Ser219Cys variant in RIT1 has been identified by our laboratory in 1 fetus with a cystic hygroma and hydrops, which was inherited from a parent of unknown clinical status. It was not observed in large population studies. Computational prediction tools and conservation analyses suggest that the p.Ser219Cyc variant may impact the protein, though this information is not predictive enough to det ermine pathogenicity. In summary, the clinical significance of the p.Ser219Cys v ariant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Uncertain
0.063
T
BayesDel_noAF
Benign
-0.15
CADD
Pathogenic
26
DANN
Uncertain
0.99
DEOGEN2
Benign
0.27
T;.;.
Eigen
Uncertain
0.32
Eigen_PC
Uncertain
0.37
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Benign
0.83
T;T;T
M_CAP
Benign
0.051
D
MetaRNN
Benign
0.24
T;T;T
MetaSVM
Uncertain
-0.23
T
MutationAssessor
Benign
0.90
L;.;.
PhyloP100
4.6
PrimateAI
Uncertain
0.58
T
PROVEAN
Benign
-1.7
N;N;N
REVEL
Uncertain
0.34
Sift
Benign
0.045
D;T;D
Sift4G
Uncertain
0.027
D;D;D
Polyphen
0.99
D;.;.
Vest4
0.38
MutPred
0.28
Loss of phosphorylation at S202 (P = 0.0166);.;.;
MVP
0.68
MPC
0.78
ClinPred
0.72
D
GERP RS
5.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.10
gMVP
0.80
Mutation Taster
=47/53
disease causing

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: rs876657981; hg19: chr1-155870235; API