rs116277395

Positions:

• chr3-47062283-T-A
• chr3-47062283-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_014159.7(SETD2):​c.6173A>T​(p.Asn2058Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 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. N2058S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SETD2 NM_014159.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.94

Genes affected

SETD2 (HGNC:18420): (SET domain containing 2, histone lysine methyltransferase) Huntington's disease (HD), a neurodegenerative disorder characterized by loss of striatal neurons, is caused by an expansion of a polyglutamine tract in the HD protein huntingtin. This gene encodes a protein belonging to a class of huntingtin interacting proteins characterized by WW motifs. This protein is a histone methyltransferase that is specific for lysine-36 of histone H3, and methylation of this residue is associated with active chromatin. This protein also contains a novel transcriptional activation domain and has been found associated with hyperphosphorylated RNA polymerase II. [provided by RefSeq, Aug 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, SETD2
• BP4: Computational evidence support a benign effect (MetaRNN=0.3540845).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SETD2	NM_014159.7	c.6173A>T	p.Asn2058Ile	missense_variant	14/21	ENST00000409792.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SETD2	ENST00000409792.4	c.6173A>T	p.Asn2058Ile	missense_variant	14/21	5	NM_014159.7	P3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.048	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.36	T
Eigen	Benign	-0.061
Eigen_PC	Benign	0.015
FATHMM_MKL	Benign	0.72	D
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.054	D
MetaRNN	Benign	0.35	T
MetaSVM	Benign	-0.46	T
MutationAssessor	Benign	0.76	N
MutationTaster	Benign	0.96	N
PrimateAI	Uncertain	0.54	T
PROVEAN	Uncertain	-2.8	D
REVEL	Benign	0.24
Sift	Uncertain	0.0010	D
Sift4G	Benign	0.18	T
Polyphen		0.73	P
Vest4		0.54
MutPred		0.15		Gain of glycosylation at T2056 (P = 0.0025);
MVP		0.71
MPC		0.71
ClinPred		0.71	D
GERP RS		3.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.20
gMVP		0.22

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-47103773;