17-7675089-G-T

Variant names:

• chr17-7675089-G-T
• rs138729528
• NM_000546.6:c.523C>A
• TP53 p.Arg175Ser

GermlineCancer (beta)

Variant summary

Our verdict is Likely pathogenic.

+6 Likely Pathogenic

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 6 classification points (ACGS-UK Somatic Oncogenicity v2025). O1_SupportingO3_ModerateO5_SupportingO6_SupportingO7_Supporting

The NM_000546.6(TP53):c.523C>A (p.Arg175Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The gene TP53 is a tumor suppressor gene (CancerMine: 1768 TSG, 396 oncogene, 578 driver citations). The gene TP53 is a known oncogene (CancerMine: 1768 TSG, 396 oncogene, 578 driver citations). The gene TP53 is a cancer driver gene (CancerMine: 1768 TSG, 396 oncogene, 578 driver citations). The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. In-silico predictor (REVEL) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (no review stars). ClinVar reports functional evidence for this variant: "SCV006451527: Studies conducted in human cell lines indicate this alteration is proficient at growth suppression and has no dominant negative effect (Kotler E et al. Mol.Cell. 2018 Jul;71:178-190.e8" and additional evidence is available in ClinVar. A different missense at the same amino acid position has been reported as Pathogenic/Likely Pathogenic in ClinVar: p.R175H: Pathogenic (ClinVar VariationId 12374, 3 stars) Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.R175?: Uncertain_significance (ClinVar VariationId 2687679, 0 stars); p.R175C: Uncertain_significance (ClinVar VariationId 245851, 3 stars); p.R175= (synonymous): Benign/Likely_benign (ClinVar VariationId 1527986, 2 stars) A different missense variant at the same amino acid position has been reported as oncogenic in ClinVar. The variant position is a cancer hotspot (cancerhotspots.org) with 2850 samples affected at this amino acid position. This exact variant is curated in the UniProt human variants database as Uncertain Significance; it is also listed as a COSMIC curated somatic variant.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TP53 NM_000546.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:2
• Conservation: PhyloP100: 4.04
• Publications: 1 publications found

Genes affected

TP53 (HGNC:11998): (tumor protein p53) This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers, including hereditary cancers such as Li-Fraumeni syndrome. Alternative splicing of this gene and the use of alternate promoters result in multiple transcript variants and isoforms. Additional isoforms have also been shown to result from the use of alternate translation initiation codons from identical transcript variants (PMIDs: 12032546, 20937277). [provided by RefSeq, Dec 2016]

TP53 Gene-Disease associations (from GenCC):

• breast cancer

  Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
• Li-Fraumeni syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P, Labcorp Genetics (formerly Invitae)
• Li-Fraumeni syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp
• adrenocortical carcinoma, hereditary

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
• sarcoma

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• bone marrow failure syndrome 5

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• colorectal cancer

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• choroid plexus carcinoma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Classification according to ACGS-UK Somatic Oncogenicity v2025

Specifications for TP53 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript:

Our verdict: Likely_pathogenic. The variant received 6 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O1Established oncogenic variant		TSG gene: ClinVar germline P/LP (single/no review) — Supporting (O1); O1 contributing sources (1.0 pts): ClinVar germline P/LP in TSG
	O3Absent or very rare in population		Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])
	O5Same location/impact as known oncogenic		Different AA at same residue with oncogenic evidence (or germline P/LP in TSG), or same AA change SCI Tier II Potential — Supporting (O5); ClinVar same-AA oncogenic/T1: false | ClinVar same-AA SCI tier: — | CGI same-AA oncogenic: false | TSG: true | ClinVar same-AA germline P/LP: false | CIViC LOF: false | ClinVar diff-AA oncogenic: true | ClinVar diff-AA germline P/LP: true
	O6Computational evidence supports deleterious effect		Computational evidence supports a deleterious/oncogenic effect; Missense variant — primary computational scorer supports an oncogenic/deleterious effect
	O7Mutational hotspot or critical domain		Supporting: cancerhotspots.org hit, critical domain, or missense neighbourhood hotspot; Note: exclude MSK/TCGA-derived samples from cancerhotspots count to avoid double-counting with O4; cancerhotspots.org: total samples at AA position = 2850, same AA change = 0; Exclude MSK/TCGA-derived samples from count to avoid double-counting with O4; UniProt domain: 0 pathogenic, 0 benign.; ±8 AA neighbourhood: 38 pathogenic, 5 benign (OR vs. background: 35.0); Variant does not impact splicing — splice-hotspot path not applicable

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_000546.6. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	TP53 NM_000546.6	MANE Select	c.523C>A p.Arg175Ser	missense	Exon 5 of 11	Prot: NP_000537.3
	TP53 NM_001126112.3		c.523C>A p.Arg175Ser	missense	Exon 5 of 11	Prot: NP_001119584.1 UniProt:
	TP53 NM_001407262.1		c.523C>A p.Arg175Ser	missense	Exon 6 of 12	Prot: NP_001394191.1 UniProt:

TP53 NM_000546.6

MANE Select

HGVSc / HGVSpc.523C>Ap.Arg175Ser

Exon rankExon 5 of 11

missense

Prot: NP_000537.3

TP53 NM_001126112.3

HGVSc / HGVSpc.523C>Ap.Arg175Ser

Exon rankExon 5 of 11

missense

Prot: NP_001119584.1UniProt: K7PPA8P04637-1

TP53 NM_001407262.1

HGVSc / HGVSpc.523C>Ap.Arg175Ser

Exon rankExon 6 of 12

missense

Prot: NP_001394191.1UniProt: K7PPA8P04637-1

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	TP53 ENST00000269305.9	TSL:1MANE Select	c.523C>A p.Arg175Ser	missense	Exon 5 of 11	Prot: ENSP00000269305.4 UniProt:
	TP53 ENST00000445888.6	TSL:1	c.523C>A p.Arg175Ser	missense	Exon 5 of 11	Prot: ENSP00000391478.2 UniProt:
	TP53 ENST00000610292.4	TSL:1	c.406C>A p.Arg136Ser	missense	Exon 4 of 10	Prot: ENSP00000478219.1 UniProt:

TP53 ENST00000269305.9

TSL:1MANE Select

HGVSc / HGVSpc.523C>Ap.Arg175Ser

Exon rankExon 5 of 11

missense

Prot: ENSP00000269305.4UniProt: P04637-1

TP53 ENST00000445888.6

TSL:1

HGVSc / HGVSpc.523C>Ap.Arg175Ser

Exon rankExon 5 of 11

missense

Prot: ENSP00000391478.2UniProt: P04637-1

TP53 ENST00000610292.4

TSL:1

HGVSc / HGVSpc.406C>Ap.Arg136Ser

Exon rankExon 4 of 10

missense

Prot: ENSP00000478219.1UniProt: P04637-4

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 3 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:33
GnomAD4 exome	AF:	AC:	Hom:	AN:	Cov:35
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:33

Showing 3 sources

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
1	1	-	Li-Fraumeni syndrome (2)
1	-	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	not provided (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Pathogenic	27
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.55
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.88	D
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.97	D
FuncVEP CTI	Pathogenic	0.92
GPN-Star LLR	N/A	-9.6
GPN-Star score	N/A	9.6
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.90	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.3	M
PhyloP100	Uncertain	4.0
popEVE	Benign	-4.2
PrimateAI	Uncertain	0.64	T
PromoterAI	N/A	-0.012	Neutral
PROVEAN	Pathogenic	-5.8	D
RBP_binding_hub_radar	N/A	0.0
RBP_regulation_power_radar	N/A	1.1
REVEL	Pathogenic	0.83
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Varity_R	N/A	0.99
VESM-3B	Benign	-12

Showing 30 of 30 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.0
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 2 of 2 scores

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

1 no calibration

1 assay found for this variant.

No calibration: 1 assay (score only).

None of these data are clinically calibrated — they are not validated, so interpret them with great caution.

Nucleotide level

Deep mutational scan of human TP53 in HCT116 colorectal cancer cells covering Exons 5, 6, 7 and 8

• Gene: TP53
• Score: 0.502

No calibration data

This score is at approximately the 43th percentile of all variants tested in this assay.

This score has not been calibrated against ACMG evidence — shown for context only, not as clinical evidence.

Other links and lift over

dbSNP: rs138729528;

hg19: chr17-7578407;

COSMIC: COSV52713177;

COSMIC: COSV52713177;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar