19-35720606-C-T

Variant names:

• chr19-35720606-C-T
• NM_014727.3:c.1259C>T

Variant summary

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

The NM_014727.3(KMT2B):​c.1259C>T​(p.Pro420Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000148 in 1,347,036 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 0.0000015 (0 hom.)
• Consequence: KMT2B NM_014727.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.23

Genes affected

KMT2B (HGNC:15840): (lysine methyltransferase 2B) This gene encodes a protein which contains multiple domains including a CXXC zinc finger, three PHD zinc fingers, two FY-rich domains, and a SET (suppressor of variegation, enhancer of zeste, and trithorax) domain. The SET domain is a conserved C-terminal domain that characterizes proteins of the MLL (mixed-lineage leukemia) family. This gene is ubiquitously expressed in adult tissues. It is also amplified in solid tumor cell lines, and may be involved in human cancer. Two alternatively spliced transcript variants encoding distinct isoforms have been reported for this gene, however, the full length nature of the shorter transcript is not known. [provided by RefSeq, Jul 2008]

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=0.09274536).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KMT2B	NM_014727.3	c.1259C>T	p.Pro420Leu	missense_variant	Exon 3 of 37	ENST00000420124.4	NP_055542.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KMT2B	ENST00000420124.4	c.1259C>T	p.Pro420Leu	missense_variant	Exon 3 of 37	1	NM_014727.3	ENSP00000398837.2

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome AF: 0.00000148 AC: 2 AN: 1347036 Hom.: 0 Cov.: 34 AF XY: 0.00000303 AC XY: 2 AN XY: 659460

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000328

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: 9.50e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 22

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.028	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	15
DANN	Benign	0.96
DEOGEN2	Benign	0.031	T
Eigen	Benign	-0.82
Eigen_PC	Benign	-0.77
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.48	T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.093	T
MetaSVM	Benign	-0.81	T
MutationAssessor	Benign	0.55	N
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.17
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.010	D
Polyphen		0.0	B
Vest4		0.24
MutPred		0.35		Loss of glycosylation at P420 (P = 0.0047);
MVP		0.18
ClinPred		0.16	T
GERP RS		1.7
Varity_R		0.063
gMVP		0.20

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: chr19-36211508;