Genetic Variant NM_022051.3:c.405C>T (chr1-231421484-G-A) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_022051.3(EGLN1):c.405C>T(p.Gly135Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000228 in 1,359,254 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. G135G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

EGLN1
NM_022051.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.00500

Publications

1 publications found

Variant links:

Genes affected

EGLN1 (HGNC:1232): (egl-9 family hypoxia inducible factor 1) The protein encoded by this gene catalyzes the post-translational formation of 4-hydroxyproline in hypoxia-inducible factor (HIF) alpha proteins. HIF is a transcriptional complex that plays a central role in mammalian oxygen homeostasis. This protein functions as a cellular oxygen sensor, and under normal oxygen concentration, modification by prolyl hydroxylation is a key regulatory event that targets HIF subunits for proteasomal destruction via the von Hippel-Lindau ubiquitylation complex. Mutations in this gene are associated with erythrocytosis familial type 3 (ECYT3). [provided by RefSeq, Nov 2009]

EGLN1 Gene-Disease associations (from GenCC):

erythrocytosis, familial, 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
autosomal dominant secondary polycythemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hemoglobin, high altitude adaptation
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
hereditary pheochromocytoma-paraganglioma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

EGLN1 links:

ENSG00000287856 (HGNC:):

ENSG00000287856 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BP6

Variant 1-231421484-G-A is Benign according to our data. Variant chr1-231421484-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 465824.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.005 with no splicing effect.

BS2

High AC in GnomAdExome4 at 27 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022051.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
EGLN1	NM_022051.3	MANE Select	c.405C>T	p.Gly135Gly	synonymous	Exon 1 of 5	NP_071334.1	R4SCQ0
EGLN1	NM_001377260.1		c.405C>T	p.Gly135Gly	synonymous	Exon 1 of 4	NP_001364189.1
EGLN1	NM_001377261.1		c.405C>T	p.Gly135Gly	synonymous	Exon 1 of 4	NP_001364190.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
EGLN1	ENST00000366641.4	TSL:1 MANE Select	c.405C>T	p.Gly135Gly	synonymous	Exon 1 of 5	ENSP00000355601.3	Q9GZT9-1
ENSG00000287856	ENST00000662216.1		c.30+40954C>T		intron	N/A	ENSP00000499467.1	A0A590UJK7
EGLN1	ENST00000889867.1		c.405C>T	p.Gly135Gly	synonymous	Exon 1 of 6	ENSP00000559926.1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151714

Hom.:

Cov.:

show subpopulations

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000117

AC:

AN:

17036

AF XY:

0.000114

show subpopulations

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:

0.000479

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000224

AC:

AN:

1207432

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

582276

show subpopulations

African (AFR)

AF:

0.0000426

AC:

AN:

23466

American (AMR)

AF:

0.00

AC:

AN:

10720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

16150

East Asian (EAS)

AF:

0.00

AC:

AN:

28354

South Asian (SAS)

AF:

0.00

AC:

AN:

44004

European-Finnish (FIN)

AF:

0.00

AC:

AN:

41232

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4330

European-Non Finnish (NFE)

AF:

0.0000242

AC:

AN:

990010

Other (OTH)

AF:

0.0000407

AC:

AN:

49166

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.534

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

151822

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74204

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41478

American (AMR)

AF:

0.00

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5122

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10504

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000442

AC:

AN:

67844

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000113

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Erythrocytosis, familial, 3 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

7.7

(source)

DANN

Benign

0.90

PhyloP100

0.0050

PromoterAI

-0.043

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over