chr8-144095991-G-T

Position:

• chr8-144095991-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_001916.5(CYC1):​c.288G>T​(p.Trp96Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000688 in 1,453,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: CYC1 NM_001916.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 3.63

Genes affected

CYC1 (HGNC:2579): (cytochrome c1) This gene encodes a subunit of the cytochrome bc1 complex, which plays an important role in the mitochondrial respiratory chain by transferring electrons from the Rieske iron-sulfur protein to cytochrome c. Mutations in this gene may cause mitochondrial complex III deficiency, nuclear type 6. [provided by RefSeq, Dec 2013]

CYC1 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.982
• PP5: Variant 8-144095991-G-T is Pathogenic according to our data. Variant chr8-144095991-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 66019.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CYC1	NM_001916.5	c.288G>T	p.Trp96Cys	missense_variant	2/7	ENST00000318911.5	NP_001907.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CYC1	ENST00000318911.5	c.288G>T	p.Trp96Cys	missense_variant	2/7	1	NM_001916.5	ENSP00000317159.4
CYC1	ENST00000533444.1	n.953G>T		non_coding_transcript_exon_variant	1/6	1
CYC1	ENST00000528618.1	n.506G>T		non_coding_transcript_exon_variant	1/3	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453954 Hom.: 0 Cov.: 40 AF XY: 0.00 AC XY: 0 AN XY: 723520

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Mitochondrial complex III deficiency nuclear type 6 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Aug 08, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Pathogenic	31
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.81	D
Eigen	Pathogenic	0.79
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.40	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.032	D
MutationAssessor	Pathogenic	4.0	H
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-13	D
REVEL	Uncertain	0.55
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.66
MutPred		0.90		Gain of catalytic residue at P95 (P = 0.0073);
MVP		0.69
MPC		1.2
ClinPred		1.0	D
GERP RS		4.6
Varity_R		0.98
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs587777041; hg19: chr8-145150894;