1-156738344-G-A

Variant names:

• chr1-156738344-G-A
• rs1022563019
• NM_145729.3:c.278C>T

Variant summary

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

The NM_145729.3(MRPL24):​c.278C>T​(p.Thr93Ile) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000131 in 152,128 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 32)
• Consequence: MRPL24 NM_145729.3 missense, splice_region
• Scores: Splicing: ADA: 0.1153
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.47
• Publications: 0 publications found

Genes affected

MRPL24 (HGNC:14037): (mitochondrial ribosomal protein L24) 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 which is more than twice the size of its E.coli counterpart (EcoL24). Sequence analysis identified two transcript variants that encode the same protein. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_145729.3. 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
	MRPL24	NM_145729.3	MANE Select	c.278C>T	p.Thr93Ile	missense splice_region	Exon 3 of 6	NP_663781.1	Q96A35
	MRPL24	NM_024540.4		c.278C>T	p.Thr93Ile	missense splice_region	Exon 3 of 6	NP_078816.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MRPL24	ENST00000361531.6	TSL:1 MANE Select	c.278C>T	p.Thr93Ile	missense splice_region	Exon 3 of 6	ENSP00000354525.2	Q96A35
	MRPL24	ENST00000368211.8	TSL:1	c.278C>T	p.Thr93Ile	missense splice_region	Exon 3 of 6	ENSP00000357194.4	Q96A35
	MRPL24	ENST00000915502.1		c.278C>T	p.Thr93Ile	missense splice_region	Exon 3 of 6	ENSP00000585561.1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152128 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

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

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152128 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74310

African (AFR) AF: 0.0000483 AC: 2 AN: 41410

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

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	0.15
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.078	T
Eigen	Benign	0.17
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.0024	T
MetaRNN	Uncertain	0.59	D
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.2	L
PhyloP100		6.5
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.20
Sift	Benign	0.47	T
Sift4G	Benign	0.43	T
Polyphen		0.48	P
Vest4		0.63
MutPred		0.64		Loss of catalytic residue at T93 (P = 0.0444)
MVP		0.69
MPC		0.59
ClinPred		0.91	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.33
gMVP		0.45
Mutation Taster		=35/65	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.12
dbscSNV1_RF	Benign	0.23
SpliceAI score (max)		0.010		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: rs1022563019; hg19: chr1-156708136; COSMIC: COSV100625666; COSMIC: COSV100625666;