18-57545913-TTAA-T

Position:

• chr18-57545913-TTAA-T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_000140.5(FECH):​c.*4796_*4798del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00116 in 152,264 control chromosomes in the GnomAD database, including 4 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.0012 (4 hom., cov: 32)
• Consequence: FECH NM_000140.5 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.347

Genes affected

FECH (HGNC:3647): (ferrochelatase) The protein encoded by this gene is localized to the mitochondrion, where it catalyzes the insertion of the ferrous form of iron into protoporphyrin IX in the heme synthesis pathway. Mutations in this gene are associated with erythropoietic protoporphyria. Two transcript variants encoding different isoforms have been found for this gene. A pseudogene of this gene is found on chromosome 3.[provided by RefSeq, May 2010]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant 18-57545913-TTAA-T is Benign according to our data. Variant chr18-57545913-TTAA-T is described in ClinVar as [Likely_benign]. Clinvar id is 327331.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00116 (176/152264) while in subpopulation EAS AF= 0.0239 (124/5182). AF 95% confidence interval is 0.0205. There are 4 homozygotes in gnomad4. There are 97 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FECH	NM_000140.5	c.*4796_*4798del		3_prime_UTR_variant	11/11	ENST00000262093.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FECH	ENST00000262093.11	c.*4796_*4798del		3_prime_UTR_variant	11/11	1	NM_000140.5
FECH	ENST00000652755.1	c.*4796_*4798del		3_prime_UTR_variant	11/11

Frequencies

GnomAD3 genomes AF: 0.00116 AC: 176 AN: 152146 Hom.: 4 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00259

Gnomad EAS AF: 0.0239

Gnomad SAS AF: 0.00166

Gnomad FIN AF: 0.00104

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000338

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.00116 AC: 176 AN: 152264 Hom.: 4 Cov.: 32 AF XY: 0.00130 AC XY: 97 AN XY: 74460

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00259

Gnomad4 EAS AF: 0.0239

Gnomad4 SAS AF: 0.00166

Gnomad4 FIN AF: 0.00104

Gnomad4 NFE AF: 0.000338

Gnomad4 OTH AF: 0.00

Alfa AF: 0.00119 Hom.: 1

Bravo AF: 0.00104

Asia WGS AF: 0.0120 AC: 43 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Protoporphyria, erythropoietic, 1 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

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Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs137860528; hg19: chr18-55213145;