8-138141314-C-G

Variant names:

• chr8-138141314-C-G
• rs1382142089
• NM_015912.4:c.3674G>C

Variant summary

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

The NM_015912.4(FAM135B):​c.3674G>C​(p.Arg1225Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1225Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FAM135B NM_015912.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.91
• Publications: 0 publications found

Genes affected

FAM135B (HGNC:28029): (family with sequence similarity 135 member B) Predicted to be involved in cellular lipid metabolic process. [provided by Alliance of Genome Resources, Apr 2022]

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, 0.967

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015912.4. 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
	FAM135B	NM_015912.4	MANE Select	c.3674G>C	p.Arg1225Pro	missense	Exon 17 of 20	NP_056996.2	Q49AJ0-1
	FAM135B	NM_001362965.2		c.3674G>C	p.Arg1225Pro	missense	Exon 17 of 20	NP_001349894.1	Q49AJ0-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM135B	ENST00000395297.6	TSL:5 MANE Select	c.3674G>C	p.Arg1225Pro	missense	Exon 17 of 20	ENSP00000378710.1	Q49AJ0-1
	FAM135B	ENST00000482951.6	TSL:1	n.*3620G>C		non_coding_transcript_exon	Exon 18 of 21	ENSP00000429874.1	E5RH68
	FAM135B	ENST00000482951.6	TSL:1	n.*3620G>C		3_prime_UTR	Exon 18 of 21	ENSP00000429874.1	E5RH68

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.48	T
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	-0.26	T
MutationAssessor	Uncertain	2.3	M
PhyloP100		7.9
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-6.2	D
REVEL	Pathogenic	0.72
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.047	D
Polyphen		0.90	P
Vest4		0.91
MutPred		0.86		Loss of MoRF binding (P = 3e-04)
MVP		0.67
MPC		2.4
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.94
gMVP		0.99
Mutation Taster		=19/81	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

dbSNP: rs1382142089; hg19: chr8-139153557;