13-49476502-C-T

Position:

• chr13-49476502-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001160308.3(SETDB2):​c.332C>T​(p.Ser111Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000139 in 1,439,750 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SETDB2 NM_001160308.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.583

Genes affected

SETDB2 (HGNC:20263): (SET domain bifurcated histone lysine methyltransferase 2) This gene encodes a member of a family of proteins that contain a methyl-CpG-binding domain (MBD) and a SET domain and function as histone methyltransferases. This protein is recruited to heterochromatin and plays a role in the regulation of chromosome segregation. This region is commonly deleted in chronic lymphocytic leukemia. Naturally-occuring readthrough transcription occurs from this gene to the downstream PHF11 (PHD finger protein 11) gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2016]

SETDB2-PHF11 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.13281569).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SETDB2	NM_001160308.3	c.332C>T	p.Ser111Phe	missense_variant	6/14	ENST00000611815.2	NP_001153780.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SETDB2	ENST00000611815.2	c.332C>T	p.Ser111Phe	missense_variant	6/14	5	NM_001160308.3	ENSP00000482240.2
SETDB2	ENST00000354234.8	c.368C>T	p.Ser123Phe	missense_variant	7/15	1		ENSP00000346175.5
SETDB2	ENST00000317257.12	c.332C>T	p.Ser111Phe	missense_variant	5/13	1		ENSP00000326477.9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000139 AC: 2 AN: 1439750 Hom.: 0 Cov.: 31 AF XY: 0.00000280 AC XY: 2 AN XY: 714950

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: 0.0000243

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 18, 2023

The c.368C>T (p.S123F) alteration is located in exon 7 (coding exon 6) of the SETDB2 gene. This alteration results from a C to T substitution at nucleotide position 368, causing the serine (S) at amino acid position 123 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	7.0
DANN	Uncertain	0.99
DEOGEN2	Benign	0.045	T;T;.;.
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.58
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.71	T;T;T;T
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.13	T;T;T;T
MetaSVM	Benign	-0.58	T
MutationAssessor	Benign	0.0	N;.;.;.
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-1.5	.;N;.;.
REVEL	Benign	0.14
Sift	Uncertain	0.010	.;D;.;.
Sift4G	Uncertain	0.050	T;T;T;T
Polyphen		0.42	B;.;P;.
Vest4		0.094
MutPred		0.35		Gain of catalytic residue at L122 (P = 0.0025);.;.;Gain of catalytic residue at L122 (P = 0.0025);
MVP		0.43
MPC		0.25
ClinPred		0.24	T
GERP RS		4.2
Varity_R		0.079
gMVP		0.26

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: chr13-50050638;