rs1219876266

Positions:

• chr2-96265239-A-C
• chr2-96265239-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_017849.4(TMEM127):​c.143T>G​(p.Leu48Arg) variant causes a missense change. 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. L48P) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TMEM127 NM_017849.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.16

Genes affected

TMEM127 (HGNC:26038): (transmembrane protein 127) This gene encodes a transmembrane protein with four predicted transmembrane domains. The protein is associated with a subpopulation of vesicular organelles corresponding to early endosomal structures, with the Golgi, and with lysosomes, and may participate in protein trafficking between these structures. Mutations in this gene and several other genes cause pheochromocytomas. Alternatively spliced transcript variants encoding the same protein have been identified. [provided by RefSeq, Aug 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.818

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMEM127	NM_017849.4	c.143T>G	p.Leu48Arg	missense_variant	2/4	ENST00000258439.8
TMEM127	NM_001193304.3	c.143T>G	p.Leu48Arg	missense_variant	2/4
TMEM127	NM_001407283.1	c.-9+630T>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMEM127	ENST00000258439.8	c.143T>G	p.Leu48Arg	missense_variant	2/4	1	NM_017849.4	P1
TMEM127	ENST00000432959.1	c.143T>G	p.Leu48Arg	missense_variant	2/4	1		P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Benign	0.25	T;T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.86	.;D
M_CAP	Uncertain	0.25	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Uncertain	0.043	D
MutationAssessor	Benign	1.9	L;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-4.4	D;D
REVEL	Pathogenic	0.84
Sift	Uncertain	0.012	D;D
Sift4G	Uncertain	0.051	T;T
Polyphen		0.94	P;P
Vest4		0.71
MutPred		0.63		Gain of loop (P = 0.0121);Gain of loop (P = 0.0121);
MVP		0.83
MPC		1.3
ClinPred		0.97	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.69
gMVP		0.97

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

Publications

LitVar

Other links and lift over

dbSNP: rs1219876266; hg19: chr2-96930977;