1-85455874-A-T

Variant names:

• chr1-85455874-A-T
• rs3738111
• NM_012137.4:c.303+8869T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_012137.4(DDAH1):​c.303+8869T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts 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: 33)
• Consequence: DDAH1 NM_012137.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0970
• Publications: 3 publications found

Genes affected

DDAH1 (HGNC:2715): (dimethylarginine dimethylaminohydrolase 1) This gene belongs to the dimethylarginine dimethylaminohydrolase (DDAH) gene family. The encoded enzyme plays a role in nitric oxide generation by regulating cellular concentrations of methylarginines, which in turn inhibit nitric oxide synthase activity. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012137.4. 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
	DDAH1	NM_012137.4	MANE Select	c.303+8869T>A		intron	N/A	NP_036269.1
	DDAH1	NM_001134445.2		c.-7+40292T>A		intron	N/A	NP_001127917.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DDAH1	ENST00000284031.13	TSL:1 MANE Select	c.303+8869T>A		intron	N/A	ENSP00000284031.8
	DDAH1	ENST00000426972.8	TSL:1	c.-7+40292T>A		intron	N/A	ENSP00000411189.4
	DDAH1	ENST00000866624.1		c.303+8869T>A		intron	N/A	ENSP00000536683.1

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 200

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	7.2
DANN	Benign	0.63
PhyloP100		0.097

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

Other links and lift over

dbSNP: rs3738111; hg19: chr1-85921557;