SMYD4 p.Gly754Arg

Variant names:

• chr17-1781441-T-G
• rs1462355082
• NM_052928.3:c.2262-2A>C

Your query was ambiguous. Multiple possible variants found:

• chr17-1781441-C-G
• chr17-1781441-C-T
• chr17-1781439-CCC-ACG
• chr17-1781439-CCC-GCG
• chr17-1781439-CCC-TCG
• chr17-1781439-CCC-TCT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_052928.3(SMYD4):​c.2262-2A>C variant causes a splice acceptor, intron change. The variant allele was found at a frequency of 0.000000685 in 1,460,580 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SMYD4 NM_052928.3 splice_acceptor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.47
• Publications: 0 publications found

Genes affected

SMYD4 (HGNC:21067): (SET and MYND domain containing 4) Predicted to enable metal ion binding activity and methyltransferase activity. Involved in heart development. Predicted to be located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_052928.3. 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
	SMYD4	NM_052928.3	MANE Select	c.2262-2A>C		splice_acceptor intron	N/A	NP_443160.2	Q8IYR2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMYD4	ENST00000305513.12	TSL:1 MANE Select	c.2262-2A>C		splice_acceptor intron	N/A	ENSP00000304360.7	Q8IYR2
	SMYD4	ENST00000954772.1		c.2262-2A>C		splice_acceptor intron	N/A	ENSP00000624831.1
	SMYD4	ENST00000954774.1		c.2262-2A>C		splice_acceptor intron	N/A	ENSP00000624833.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460580 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726532

African (AFR) AF: 0.00 AC: 0 AN: 33386

American (AMR) AF: 0.00 AC: 0 AN: 44388

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26080

East Asian (EAS) AF: 0.00 AC: 0 AN: 39670

South Asian (SAS) AF: 0.00 AC: 0 AN: 85964

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111576

Other (OTH) AF: 0.00 AC: 0 AN: 60352

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.030
CADD	Pathogenic	33
DANN	Uncertain	0.99
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		5.5

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.88
SpliceAI score (max)		0.95		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.81		Position offset: -10
DS_AL_spliceai		0.95		Position offset: -2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1462355082; hg19: chr17-1684735;