chr10-100523933-C-G

Variant names:

• chr10-100523933-C-G
• rs779151793
• NM_005004.4:c.469-4G>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_005004.4(NDUFB8):​c.469-4G>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NDUFB8 NM_005004.4 splice_region, intron
• Scores: Splicing: ADA: 0.00004876
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.243
• Publications: 0 publications found

Genes affected

NDUFB8 (HGNC:7703): (NADH:ubiquinone oxidoreductase subunit B8) Involved in mitochondrial respiratory chain complex I assembly. Located in endoplasmic reticulum and mitochondrion. Part of mitochondrial respiratory chain complex I. Implicated in nuclear type mitochondrial complex I deficiency 32. Biomarker of Alzheimer's disease and Parkinson's disease. [provided by Alliance of Genome Resources, Apr 2022]

NDUFB8 Gene-Disease associations (from GenCC):

• mitochondrial complex I deficiency, nuclear type 32

  Inheritance: AR, Unknown Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Leigh syndrome

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen
• Leigh syndrome with cardiomyopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000255339 (HGNC:):

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 10-100523933-C-G is Benign according to our data. Variant chr10-100523933-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 2846432.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005004.4. 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
	NDUFB8	NM_005004.4	MANE Select	c.469-4G>C		splice_region intron	N/A	NP_004995.1	O95169-1
	NDUFB8	NM_001284367.2		c.*156G>C		3_prime_UTR	Exon 5 of 5	NP_001271296.1	O95169-2
	NDUFB8	NM_001284368.1		c.376-4G>C		splice_region intron	N/A	NP_001271297.1	O95169-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NDUFB8	ENST00000299166.9	TSL:1 MANE Select	c.469-4G>C		splice_region intron	N/A	ENSP00000299166.4	O95169-1
	ENSG00000255339	ENST00000557395.5	TSL:2	n.*112+44G>C		intron	N/A	ENSP00000456832.1
	NDUFB8	ENST00000937696.1		c.499-4G>C		splice_region intron	N/A	ENSP00000607755.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

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	-0.83
CADD	Benign	1.8
DANN	Benign	0.56
PhyloP100		-0.24
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000049
dbscSNV1_RF	Benign	0.076
SpliceAI score (max)		0.16		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: rs779151793; hg19: chr10-102283690;