1-225838705-A-T

Variant names:

• chr1-225838705-A-T
• rs2234922
• NM_001136018.4:c.416A>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_000120.4(EPHX1):​c.416A>T​(p.His139Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000929 in 1,613,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H139R) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000096 (0 hom.)
• Consequence: EPHX1 NM_000120.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.840
• Publications: 310 publications found

Genes affected

EPHX1 (HGNC:3401): (epoxide hydrolase 1) Epoxide hydrolase is a critical biotransformation enzyme that converts epoxides from the degradation of aromatic compounds to trans-dihydrodiols which can be conjugated and excreted from the body. Epoxide hydrolase functions in both the activation and detoxification of epoxides. Mutations in this gene cause preeclampsia, epoxide hydrolase deficiency or increased epoxide hydrolase activity. Alternatively spliced transcript variants encoding the same protein have been found for this gene.[provided by RefSeq, Dec 2008]

EPHX1 Gene-Disease associations (from GenCC):

• familial hypercholanemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary nonpolyposis colon cancer

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.045999378).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000120.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EPHX1	NM_001136018.4	MANE Select	c.416A>T	p.His139Leu	missense	Exon 4 of 9	NP_001129490.1
	EPHX1	NM_000120.4		c.416A>T	p.His139Leu	missense	Exon 4 of 9	NP_000111.1
	EPHX1	NM_001291163.2		c.416A>T	p.His139Leu	missense	Exon 4 of 9	NP_001278092.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EPHX1	ENST00000272167.10	TSL:1 MANE Select	c.416A>T	p.His139Leu	missense	Exon 4 of 9	ENSP00000272167.5
	EPHX1	ENST00000366837.5	TSL:1	c.416A>T	p.His139Leu	missense	Exon 4 of 9	ENSP00000355802.4
	EPHX1	ENST00000614058.4	TSL:1	c.416A>T	p.His139Leu	missense	Exon 4 of 9	ENSP00000480004.1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151964 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000278 AC: 7 AN: 251356 AF XY: 0.0000368

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000958 AC: 14 AN: 1461884 Hom.: 0 Cov.: 37 AF XY: 0.0000124 AC XY: 9 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000116 AC: 10 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112008

Other (OTH) AF: 0.0000662 AC: 4 AN: 60396

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151964 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74244

African (AFR) AF: 0.00 AC: 0 AN: 41358

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10594

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67956

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 15667

ExAC AF: 0.0000247 AC: 3

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.45	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	7.6
DANN	Benign	0.66
DEOGEN2	Benign	0.067	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.19	N
LIST_S2	Benign	0.17	T
M_CAP	Benign	0.0096	T
MetaRNN	Benign	0.046	T
MetaSVM	Benign	-0.90	T
MutationAssessor	Benign	0.14	N
PhyloP100		0.84
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.016
Sift	Benign	0.71	T
Sift4G	Benign	0.30	T
Polyphen		0.0050	B
Vest4		0.20
MutPred		0.37		Loss of disorder (P = 0.0361)
MVP		0.23
MPC		0.24
ClinPred		0.011	T
GERP RS		2.5
Varity_R		0.028
gMVP		0.46
Mutation Taster		=97/3	polymorphism

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: rs2234922; hg19: chr1-226026406;