chr11-68896543-G-A

Variant names:

• chr11-68896543-G-A
• rs372240224
• NM_181514.2:c.368C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_181514.2(MRPL21):​c.368C>T​(p.Ala123Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000253 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000025 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MRPL21 NM_181514.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.86
• Publications: 0 publications found

Genes affected

MRPL21 (HGNC:14479): (mitochondrial ribosomal protein L21) 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. Multiple transcript variants encoding different isoforms were identified through sequence analysis although some may be subject to nonsense-mediated decay (NMD). [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1268627).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181514.2. 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
	MRPL21	NM_181514.2	MANE Select	c.368C>T	p.Ala123Val	missense	Exon 4 of 7	NP_852615.1	Q7Z2W9-1
	MRPL21	NM_181515.2		c.113C>T	p.Ala38Val	missense	Exon 4 of 7	NP_852616.1	Q7Z2W9-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MRPL21	ENST00000362034.7	TSL:1 MANE Select	c.368C>T	p.Ala123Val	missense	Exon 4 of 7	ENSP00000354580.2	Q7Z2W9-1
	MRPL21	ENST00000567045.5	TSL:2	c.113C>T	p.Ala38Val	missense	Exon 4 of 6	ENSP00000457859.1	H3BUY0
	MRPL21	ENST00000918368.1		c.368C>T	p.Ala123Val	missense	Exon 4 of 6	ENSP00000588427.1

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 152222 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000358 AC: 9 AN: 251468 AF XY: 0.0000368

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000253 AC: 37 AN: 1461882 Hom.: 0 Cov.: 31 AF XY: 0.0000248 AC XY: 18 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000671 AC: 3 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000104 AC: 9 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000207 AC: 23 AN: 1112002

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 152222 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74368

African (AFR) AF: 0.00 AC: 0 AN: 41436

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68050

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000564 Hom.: 0

Bravo AF: 0.0000604

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000412 AC: 5

Asia WGS AF: 0.00260 AC: 9 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

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	Benign	0.10
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	16
DANN	Benign	0.95
DEOGEN2	Benign	0.020	T
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.93
FATHMM_MKL	Benign	0.62	D
LIST_S2	Benign	0.63	T
M_CAP	Benign	0.0053	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	2.0	M
PhyloP100		1.9
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.93	N
REVEL	Benign	0.095
Sift	Benign	0.16	T
Sift4G	Benign	0.081	T
Polyphen		0.28	B
Vest4		0.28
MVP		0.19
MPC		0.17
ClinPred		0.052	T
GERP RS		-3.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.041
gMVP		0.33
Mutation Taster		=96/4	polymorphism

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: rs372240224; hg19: chr11-68664011; COSMIC: COSV62914079; COSMIC: COSV62914079;