Genetic Variant NM_017840.4:c.298G>T (chr11-59806805-C-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_017840.4(MRPL16):c.298G>T(p.Gly100Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,132 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. G100S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

MRPL16
NM_017840.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.86

Publications

0 publications found

Variant links:

Genes affected

MRPL16 (HGNC:14476): (mitochondrial ribosomal protein L16) Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein. [provided by RefSeq, Jul 2008]

MRPL16 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.888

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MRPL16	NM_017840.4 link	c.298G>T	p.Gly100Cys	missense_variant	Exon 4 of 4	ENST00000300151.5	NP_060310.1	Q9NX20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MRPL16	ENST00000300151.5 link	c.298G>T	p.Gly100Cys	missense_variant	Exon 4 of 4	1	NM_017840.4	ENSP00000300151.4		Q9NX20
MRPL16	ENST00000534340.1 link	c.-12G>T		5_prime_UTR_variant	Exon 4 of 4	3		ENSP00000436592.1		E9PI14

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1457132

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723726

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33390

American (AMR)

AF:

0.00

AC:

AN:

44674

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26096

East Asian (EAS)

AF:

0.00

AC:

AN:

39530

South Asian (SAS)

AF:

0.00

AC:

AN:

86212

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

9.03e-7

AC:

AN:

1107934

Other (OTH)

AF:

0.00

AC:

AN:

60170

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.43

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.18

Eigen

Pathogenic

0.94

Eigen_PC

Pathogenic

0.92

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.045

MetaRNN

Pathogenic

0.89

MetaSVM

Benign

-0.76

MutationAssessor

Uncertain

2.5

PhyloP100

7.9

PrimateAI

Uncertain

0.71

PROVEAN

Pathogenic

-6.1

REVEL

Uncertain

0.57

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.012

Polyphen

1.0

Vest4

0.89

MutPred

0.65

Gain of catalytic residue at G100 (P = 0.0748);

MVP

0.74

MPC

0.59

ClinPred

0.99

GERP RS

6.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.86

gMVP

0.79

Mutation Taster

=18/82

disease causing

(source)

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

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NM_017840.4:c.298G>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over