17-49619327-A-T

Variant names:

• chr17-49619327-A-T
• rs1057519972
• NM_001007228.2:c.259T>A

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1 PM2 PP2 PP3_Moderate

The NM_001007228.2(SPOP):​c.259T>A​(p.Tyr87Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y87C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SPOP NM_001007228.2 missense
• Clinical Significance: - - O:1
• Conservation: PhyloP100: 9.32
• Publications: 25 publications found

Genes affected

SPOP (HGNC:11254): (speckle type BTB/POZ protein) This gene encodes a protein that may modulate the transcriptional repression activities of death-associated protein 6 (DAXX), which interacts with histone deacetylase, core histones, and other histone-associated proteins. In mouse, the encoded protein binds to the putative leucine zipper domain of macroH2A1.2, a variant H2A histone that is enriched on inactivated X chromosomes. The BTB/POZ domain of this protein has been shown in other proteins to mediate transcriptional repression and to interact with components of histone deacetylase co-repressor complexes. Alternative splicing of this gene results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

SPOP Gene-Disease associations (from GenCC):

• neurodevelopmental disorder with microcephaly and dysmorphic facies

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, Illumina
• neurodevelopmental disorder with relative macrocephaly and with or without cardiac or endocrine anomalies

  Inheritance: AD Classification: STRONG Submitted by: G2P

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_001007228.2
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the SPOP gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 24 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Trascript score misZ: 5.5316 (above the threshold of 3.09). GenCC associations: The gene is linked to neurodevelopmental disorder with microcephaly and dysmorphic facies, neurodevelopmental disorder with relative macrocephaly and with or without cardiac or endocrine anomalies.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.908

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPOP	NM_001007228.2	c.259T>A	p.Tyr87Asn	missense_variant	Exon 4 of 10	ENST00000504102.6	NP_001007229.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPOP	ENST00000504102.6	c.259T>A	p.Tyr87Asn	missense_variant	Exon 4 of 10	1	NM_001007228.2	ENSP00000425905.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: -

Submissions summary: Other:1

Revision: -

Submissions by phenotype

Neoplasm Other:1

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: -

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.85	D;D;D;D;.;D;.;D;.
Eigen	Pathogenic	0.97
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	.;D;.;.;D;D;D;D;D
M_CAP	Uncertain	0.22	D
MetaRNN	Pathogenic	0.91	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.38	D
MutationAssessor	Pathogenic	3.3	M;M;M;M;.;.;.;.;.
PhyloP100		9.3
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-7.2	D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.75
Sift	Uncertain	0.0040	D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0080	D;D;D;D;.;D;.;.;.
Polyphen		1.0	D;D;D;D;.;.;.;.;.
Vest4		0.87
MutPred		0.74		Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);Loss of stability (P = 0.032);
MVP		0.79
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.94
gMVP		0.99

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: rs1057519972; hg19: chr17-47696689; COSMIC: COSV61652887; COSMIC: COSV61652887;