1-227732428-C-A

Variant summary

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

The NM_023007.3(JMJD4):c.1218G>T(p.Gln406His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,704 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: JMJD4 NM_023007.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.30

Genes affected

JMJD4 (HGNC:25724): (jumonji domain containing 4) Enables 2-oxoglutarate-dependent dioxygenase activity. Involved in positive regulation of translational termination and protein hydroxylation. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

SNAP47 (HGNC:30669): (synaptosome associated protein 47) Predicted to enable SNAP receptor activity and syntaxin binding activity. Predicted to be involved in synaptic vesicle fusion to presynaptic active zone membrane and synaptic vesicle priming. Predicted to act upstream of or within long-term synaptic potentiation. Colocalizes with BLOC-1 complex. [provided by Alliance of Genome Resources, Apr 2022]

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=0.14217526).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
JMJD4	NM_023007.3	c.1218G>T	p.Gln406His	missense_variant	6/6	ENST00000620518.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
JMJD4	ENST00000620518.5	c.1218G>T	p.Gln406His	missense_variant	6/6	1	NM_023007.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460704 Hom.: 0 Cov.: 38 AF XY: 0.00 AC XY: 0 AN XY: 726654

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Feb 13, 2024

The c.1356G>T (p.Q452H) alteration is located in exon 6 (coding exon 6) of the JMJD4 gene. This alteration results from a G to T substitution at nucleotide position 1356, causing the glutamine (Q) at amino acid position 452 to be replaced by a histidine (H). 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	0.16
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
Cadd	Benign	12
Dann	Benign	0.81
DEOGEN2	Benign	0.0023	T;T;T;.
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.33
FATHMM_MKL	Uncertain	0.80	D
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.14	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.7	L;L;.;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.38	T
PROVEAN	Benign	-0.030	N;.;.;.
REVEL	Benign	0.023
Sift	Benign	0.23	T;.;.;.
Sift4G	Benign	0.44	T;T;T;T
Polyphen		0.0020	B;B;.;B
Vest4		0.072
MutPred		0.27		Loss of disorder (P = 0.0993);Loss of disorder (P = 0.0993);.;.;
MVP		0.14
MPC		0.12
ClinPred		0.083	T
GERP RS		1.9
Varity_R		0.024
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: chr1-227920129;