chr22-35381167-C-T

Variant names:

• chr22-35381167-C-T
• rs769661460
• NM_002133.3:c.-7C>T

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BS1_Supporting

The NM_002133.3(HMOX1):​c.-7C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000318 in 1,542,704 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 Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000035 (0 hom.)
• Consequence: HMOX1 NM_002133.3 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0370
• Publications: 0 publications found

Genes affected

HMOX1 (HGNC:5013): (heme oxygenase 1) Heme oxygenase, an essential enzyme in heme catabolism, cleaves heme to form biliverdin, which is subsequently converted to bilirubin by biliverdin reductase, and carbon monoxide, a putative neurotransmitter. Heme oxygenase activity is induced by its substrate heme and by various nonheme substances. Heme oxygenase occurs as 2 isozymes, an inducible heme oxygenase-1 and a constitutive heme oxygenase-2. HMOX1 and HMOX2 belong to the heme oxygenase family. [provided by RefSeq, Jul 2008]

HMOX1 Gene-Disease associations (from GenCC):

• heme oxygenase 1 deficiency

  Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)
• cystic fibrosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• chronic obstructive pulmonary disease

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.69).
• BS1: Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000345 (48/1390350) while in subpopulation SAS AF = 0.00054 (43/79610). AF 95% confidence interval is 0.000412. There are 0 homozygotes in GnomAdExome4. There are 29 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002133.3. 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
	HMOX1	NM_002133.3	MANE Select	c.-7C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 5	NP_002124.1	Q6FH11
	HMOX1	NM_002133.3	MANE Select	c.-7C>T		5_prime_UTR	Exon 1 of 5	NP_002124.1	Q6FH11

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HMOX1	ENST00000216117.9	TSL:1 MANE Select	c.-7C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 5	ENSP00000216117.8	P09601
	HMOX1	ENST00000216117.9	TSL:1 MANE Select	c.-7C>T		5_prime_UTR	Exon 1 of 5	ENSP00000216117.8	P09601
	HMOX1	ENST00000679074.1		c.-7C>T		5_prime_UTR_premature_start_codon_gain	Exon 1 of 4	ENSP00000503459.1	A0A7I2V3I1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152236 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: 0.000116 AC: 16 AN: 138120 AF XY: 0.000145

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: 0.000240

GnomAD4 exome AF: 0.0000345 AC: 48 AN: 1390350 Hom.: 0 Cov.: 31 AF XY: 0.0000422 AC XY: 29 AN XY: 686848

African (AFR) AF: 0.00 AC: 0 AN: 32006

American (AMR) AF: 0.00 AC: 0 AN: 36074

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25164

East Asian (EAS) AF: 0.00 AC: 0 AN: 36328

South Asian (SAS) AF: 0.000540 AC: 43 AN: 79610

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35300

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5676

European-Non Finnish (NFE) AF: 0.00000277 AC: 3 AN: 1082084

Other (OTH) AF: 0.0000344 AC: 2 AN: 58108

GnomAD4 genome AF: 0.00000656 AC: 1 AN: 152354 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74504

African (AFR) AF: 0.00 AC: 0 AN: 41578

American (AMR) AF: 0.00 AC: 0 AN: 15312

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2114

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.69
CADD	Benign	11
DANN	Benign	0.90
PhyloP100		0.037
PromoterAI		-0.030	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=300/0	polymorphism

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: rs769661460; hg19: chr22-35777160;