chr1-44218622-A-C

Variant names:

• chr1-44218622-A-C
• rs749903843
• NM_019100.5:c.587A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 4P and 4B. PP3_Strong BS2

The NM_019100.5(DMAP1):​c.587A>C​(p.Tyr196Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000267 in 1,461,034 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000027 (0 hom.)
• Consequence: DMAP1 NM_019100.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.63
• Publications: 1 publications found

Genes affected

DMAP1 (HGNC:18291): (DNA methyltransferase 1 associated protein 1) This gene encodes a subunit of several, distinct complexes involved in the repression or activation of transcription. The encoded protein can independently repress transcription and is targeted to replication foci throughout S phase by interacting directly with the N-terminus of DNA methyltransferase 1. During late S phase, histone deacetylase 2 is added to this complex, providing a means to deacetylate histones in transcriptionally inactive heterochromatin following replication. The encoded protein is also a component of the nucleosome acetyltransferase of H4 complex and interacts with the transcriptional corepressor tumor susceptibility gene 101 and the pro-apoptotic death-associated protein 6, among others. Alternatively spliced transcript variants encoding the same protein have been described. [provided by RefSeq, Jul 2008]

ENSG00000302536 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.946
• BS2: High AC in GnomAdExome4 at 39 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMAP1	NM_019100.5	c.587A>C	p.Tyr196Ser	missense_variant	Exon 5 of 10	ENST00000372289.7	NP_061973.1
DMAP1	NM_001034023.2	c.587A>C	p.Tyr196Ser	missense_variant	Exon 6 of 11		NP_001029195.1
DMAP1	NM_001034024.2	c.587A>C	p.Tyr196Ser	missense_variant	Exon 6 of 11		NP_001029196.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DMAP1	ENST00000372289.7	c.587A>C	p.Tyr196Ser	missense_variant	Exon 5 of 10	1	NM_019100.5	ENSP00000361363.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000159 AC: 4 AN: 251292 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000267 AC: 39 AN: 1461034 Hom.: 0 Cov.: 31 AF XY: 0.0000261 AC XY: 19 AN XY: 726624

African (AFR) AF: 0.00 AC: 0 AN: 33460

American (AMR) AF: 0.00 AC: 0 AN: 44702

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39664

South Asian (SAS) AF: 0.00 AC: 0 AN: 86242

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000351 AC: 39 AN: 1111312

Other (OTH) AF: 0.00 AC: 0 AN: 60356

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000761 Hom.: 0

Bravo AF: 0.0000151

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 26, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.587A>C (p.Y196S) alteration is located in exon 5 (coding exon 5) of the DMAP1 gene. This alteration results from a A to C substitution at nucleotide position 587, causing the tyrosine (Y) at amino acid position 196 to be replaced by a serine (S). 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	Pathogenic	0.87
BayesDel_addAF	Pathogenic	0.49	D
BayesDel_noAF	Pathogenic	0.49
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.77	D;T;D;.;D;D
Eigen	Pathogenic	0.96
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.96	.;D;D;D;.;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.95	D;D;D;D;D;D
MetaSVM	Uncertain	0.40	D
MutationAssessor	Pathogenic	3.7	H;.;.;.;H;H
PhyloP100		8.6
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-7.8	D;D;D;D;D;D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		1.0	D;.;.;.;D;D
Vest4		0.98
MVP		0.71
MPC		1.6
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.98
gMVP		0.83
Mutation Taster		=16/84	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs749903843; hg19: chr1-44684294;