chr16-82148850-C-A

Position:

• chr16-82148850-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_005792.2(MPHOSPH6):​c.364G>T​(p.Val122Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,858 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: MPHOSPH6 NM_005792.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.65

Genes affected

MPHOSPH6 (HGNC:7214): (M-phase phosphoprotein 6) Predicted to enable RNA binding activity. Involved in maturation of 5.8S rRNA. Located in cytosol; nucleolus; and nucleoplasm. Colocalizes with nuclear exosome (RNase complex). [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31787902).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MPHOSPH6	NM_005792.2	c.364G>T	p.Val122Leu	missense_variant	5/5	ENST00000258169.9
MPHOSPH6	XM_011522808.4	c.310G>T	p.Val104Leu	missense_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MPHOSPH6	ENST00000258169.9	c.364G>T	p.Val122Leu	missense_variant	5/5	1	NM_005792.2	P1
MPHOSPH6	ENST00000563504.5	c.277G>T	p.Val93Leu	missense_variant	5/5	2
MPHOSPH6	ENST00000563100.5	c.310G>T	p.Val104Leu	missense_variant, NMD_transcript_variant	6/7	5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461858 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727230

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 02, 2024

The c.364G>T (p.V122L) alteration is located in exon 5 (coding exon 5) of the MPHOSPH6 gene. This alteration results from a G to T substitution at nucleotide position 364, causing the valine (V) at amino acid position 122 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.63
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.064	T;.
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.94	D;D
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.32	T;T
MetaSVM	Benign	-0.76	T
MutationAssessor	Uncertain	2.6	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-2.1	N;N
REVEL	Benign	0.18
Sift	Uncertain	0.0050	D;D
Sift4G	Uncertain	0.046	D;D
Polyphen		0.81	P;.
Vest4		0.48
MutPred		0.23		Loss of methylation at K127 (P = 0.0972);.;
MVP		0.38
MPC		0.0020
ClinPred		0.93	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.71
gMVP		0.38

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: rs1401383088; hg19: chr16-82182455;