chr10-43100480-C-T

Position:

• chr10-43100480-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP5_Moderate

The NM_020975.6(RET):​c.95C>T​(p.Ser32Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,532 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. S32S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RET NM_020975.6 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2 O:1
• Conservation: PhyloP100: 4.67

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-43100480-C-T is Pathogenic according to our data. Variant chr10-43100480-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 13923.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RET	NM_020975.6	c.95C>T	p.Ser32Leu	missense_variant	2/20	ENST00000355710.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RET	ENST00000355710.8	c.95C>T	p.Ser32Leu	missense_variant	2/20	5	NM_020975.6	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461532 Hom.: 0 Cov.: 37 AF XY: 0.00 AC XY: 0 AN XY: 727024

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Aganglionic megacolon Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

Clinical Molecular Genetics Laboratory, Johns Hopkins All Children's Hospital

Jul 29, 2014

- -

Multiple endocrine neoplasia, type 2 Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Invitae

Aug 20, 2022

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 32 of the RET protein (p.Ser32Leu). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Hirschsprung disease (PMID: 7581377, 8114939). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 13923). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Experimental studies have shown that this missense change affects RET function (PMID: 8654369, 8894691, 9681515, 20473317). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Hirschsprung disease, susceptibility to, 1 Other:1

risk factor, no assertion criteria provided

literature only

OMIM

Jan 27, 1994

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.50	T;.;.
Eigen	Benign	0.16
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.88	D;D;D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.52	D;D;D
MetaSVM	Benign	-0.36	T
MutationAssessor	Uncertain	2.2	M;.;M
MutationTaster	Benign	0.88	D;D
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-1.5	N;.;N
REVEL	Uncertain	0.43
Sift	Benign	0.31	T;.;T
Sift4G	Benign	0.27	T;D;T
Polyphen		0.24	B;.;P
Vest4		0.53
MutPred		0.79		Loss of sheet (P = 0.1398);Loss of sheet (P = 0.1398);Loss of sheet (P = 0.1398);
MVP		0.95
MPC		0.98
ClinPred		0.90	D
GERP RS		5.5
Varity_R		0.35
gMVP		0.71

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

LitVar

Other links and lift over

dbSNP: rs76764689; hg19: chr10-43595928;