NM_022909.4:c.535A>G

Variant names:

• chr5-69208243-A-G
• rs1442644470
• NM_022909.4:c.535A>G

Variant summary

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

The NM_022909.4(CENPH):​c.535A>G​(p.Lys179Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000314 in 1,592,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CENPH NM_022909.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.84
• Publications: 0 publications found

Genes affected

CENPH (HGNC:17268): (centromere protein H) Centromere and kinetochore proteins play a critical role in centromere structure, kinetochore formation, and sister chromatid separation. The protein encoded by this gene colocalizes with inner kinetochore plate proteins CENP-A and CENP-C in both interphase and metaphase. It localizes outside of centromeric heterochromatin, where CENP-B is localized, and inside the kinetochore corona, where CENP-E is localized during prometaphase. It is thought that this protein can bind to itself, as well as to CENP-A, CENP-B or CENP-C. Multimers of the protein localize constitutively to the inner kinetochore plate and play an important role in the organization and function of the active centromere-kinetochore complex. [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=0.17833146).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CENPH	NM_022909.4	c.535A>G	p.Lys179Glu	missense_variant	Exon 8 of 9	ENST00000283006.7	NP_075060.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CENPH	ENST00000283006.7	c.535A>G	p.Lys179Glu	missense_variant	Exon 8 of 9	1	NM_022909.4	ENSP00000283006.2
CENPH	ENST00000515001.5	c.478A>G	p.Lys160Glu	missense_variant	Exon 7 of 8	2		ENSP00000426014.1
CENPH	ENST00000502689.1	c.352A>G	p.Lys118Glu	missense_variant	Exon 7 of 8	5		ENSP00000423936.1
CENPH	ENST00000510742.1	n.513A>G		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152216 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000482

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 AF: 0.00000208 AC: 3 AN: 1440602 Hom.: 0 Cov.: 26 AF XY: 0.00000279 AC XY: 2 AN XY: 717808

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000303 AC: 1 AN: 33050

American (AMR) AF: 0.00 AC: 0 AN: 44326

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26006

East Asian (EAS) AF: 0.00 AC: 0 AN: 39520

South Asian (SAS) AF: 0.00 AC: 0 AN: 85144

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53374

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5726

European-Non Finnish (NFE) AF: 0.00000183 AC: 2 AN: 1093728

Other (OTH) AF: 0.00 AC: 0 AN: 59728

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.038550), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152216 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74364

African (AFR) AF: 0.0000482 AC: 2 AN: 41470

American (AMR) AF: 0.00 AC: 0 AN: 15266

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

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: 2094

Alfa AF: 0.0000329 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 07, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.535A>G (p.K179E) alteration is located in exon 8 (coding exon 8) of the CENPH gene. This alteration results from a A to G substitution at nucleotide position 535, causing the lysine (K) at amino acid position 179 to be replaced by a glutamic acid (E). 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	Benign	0.17
BayesDel_addAF	Benign	-0.048	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.088	T;T
Eigen	Benign	-0.036
Eigen_PC	Benign	-0.019
FATHMM_MKL	Benign	0.50	D
LIST_S2	Benign	0.71	T;T
M_CAP	Benign	0.0051	T
MetaRNN	Benign	0.18	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.5	M;.
PhyloP100		1.8
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-1.4	N;N
REVEL	Benign	0.21
Sift	Benign	0.054	T;D
Sift4G	Benign	0.072	T;T
Polyphen		0.81	P;P
Vest4		0.29
MVP		0.63
MPC		0.25
ClinPred		0.73	D
GERP RS		1.5
Varity_R		0.076
gMVP		0.26
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: rs1442644470; hg19: chr5-68504070;