6-108355677-G-T

Variant names:

• chr6-108355677-G-T
• NM_145315.5:c.439G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_145315.5(AFG1L):​c.439G>T​(p.Asp147Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000344 in 1,453,094 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D147A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: AFG1L NM_145315.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.37
• Publications: 0 publications found

Genes affected

AFG1L (HGNC:16411): (AFG1 like ATPase) This gene encodes a mitochondrial integral membrane protein that plays a role in mitochondrial protein homeostasis. The protein contains a P-loop motif and a five-domain structure that is conserved in fly, yeast, and bacteria. It functions to mediate the degradation of nuclear-encoded complex IV subunits. Two conserved estrogen receptor binding sites are located within 2.5 kb of this gene. Polymorphisms in this gene have been associated with bipolar disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2016]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.981

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_145315.5. 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
	AFG1L	NM_145315.5	MANE Select	c.439G>T	p.Asp147Tyr	missense	Exon 4 of 13	NP_660358.2
	AFG1L	NM_001323005.2		c.439G>T	p.Asp147Tyr	missense	Exon 4 of 12	NP_001309934.1
	AFG1L	NR_136553.2		n.166-1013G>T		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AFG1L	ENST00000368977.9	TSL:1 MANE Select	c.439G>T	p.Asp147Tyr	missense	Exon 4 of 13	ENSP00000357973.3	Q8WV93
	AFG1L	ENST00000908138.1		c.490G>T	p.Asp164Tyr	missense	Exon 5 of 14	ENSP00000578197.1
	AFG1L	ENST00000908137.1		c.433G>T	p.Asp145Tyr	missense	Exon 4 of 13	ENSP00000578196.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000344 AC: 5 AN: 1453094 Hom.: 0 Cov.: 29 AF XY: 0.00000138 AC XY: 1 AN XY: 722508

African (AFR) AF: 0.00 AC: 0 AN: 33148

American (AMR) AF: 0.00 AC: 0 AN: 43454

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26006

East Asian (EAS) AF: 0.00 AC: 0 AN: 39372

South Asian (SAS) AF: 0.00 AC: 0 AN: 83616

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53172

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5742

European-Non Finnish (NFE) AF: 0.00000451 AC: 5 AN: 1108550

Other (OTH) AF: 0.00 AC: 0 AN: 60034

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.41	T
Eigen	Pathogenic	0.78
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.085	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.75	D
PhyloP100		9.4
PrimateAI	Pathogenic	0.79	T
PROVEAN	Pathogenic	-8.2	D
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.98
MutPred		0.89		Gain of phosphorylation at D147 (P = 0.0427)
MVP		0.49
MPC		0.78
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.97
gMVP		0.89
Mutation Taster		=10/90	disease causing

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

Other links and lift over

hg19: chr6-108676881;