NM_020975.6:c.1649G>T

Variant names:

• chr10-43112853-G-T
• rs747844360
• NM_020975.6:c.1649G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_020975.6(RET):​c.1649G>T​(p.Gly550Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000000685 in 1,460,622 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. 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. G550E) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RET NM_020975.6 missense, splice_region
• Scores: Splicing: ADA: 0.9998
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.98
• Publications: 0 publications found

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: G2P, Orphanet
• multiple endocrine neoplasia type 2A

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, ClinGen, Orphanet
• multiple endocrine neoplasia type 2B

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, 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

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020975.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RET	NM_020975.6	MANE Select	c.1649G>T	p.Gly550Val	missense splice_region	Exon 9 of 20	NP_066124.1	P07949-1
	RET	NM_001406743.1		c.1649G>T	p.Gly550Val	missense splice_region	Exon 9 of 21	NP_001393672.1	P07949-1
	RET	NM_001406744.1		c.1649G>T	p.Gly550Val	missense splice_region	Exon 9 of 20	NP_001393673.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RET	ENST00000355710.8	TSL:5 MANE Select	c.1649G>T	p.Gly550Val	missense splice_region	Exon 9 of 20	ENSP00000347942.3	P07949-1
	RET	ENST00000340058.6	TSL:1	c.1649G>T	p.Gly550Val	missense splice_region	Exon 9 of 19	ENSP00000344798.4	P07949-2
	RET	ENST00000713926.1		c.1520G>T	p.Gly507Val	missense splice_region	Exon 9 of 19	ENSP00000519223.1	A0AAQ5BH28

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460622 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726660

African (AFR) AF: 0.00 AC: 0 AN: 33450

American (AMR) AF: 0.00 AC: 0 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86218

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53280

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111068

Other (OTH) AF: 0.00 AC: 0 AN: 60324

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.32
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	34
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.59	D
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.86	D
M_CAP	Pathogenic	0.61	D
MetaRNN	Uncertain	0.71	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		6.0
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-2.0	N
REVEL	Uncertain	0.59
Sift	Benign	0.098	T
Sift4G	Benign	0.085	T
Polyphen		1.0	D
Vest4		0.60
MutPred		0.28		Gain of methylation at K549 (P = 0.0428)
MVP		0.97
MPC		0.88
ClinPred		0.98	D
GERP RS		5.4
Varity_R		0.68
gMVP		0.85
Mutation Taster		=5/95	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.95
SpliceAI score (max)		0.32		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.32		Position offset: 34

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs747844360; hg19: chr10-43608301;