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CancerIndex

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Malignant Neoplasm of Unknown Primary · CancerIndex

Cancers
Neoplasm
Neoplasm by Special Category
Malignant Neoplasm
Secondary Malignant Neoplasm
Malignant Neoplasm of Unknown Primary

Subtype

Malignant Neoplasm of Unknown Primary

CI-CAN-00001150CUPExplore in graph →

4,158 active trials54 approved drugs532 evidence items

NCIt: C8566
Other: 1 more code

Overview
Statistics
Survival
Genomics199
Variants & evidence532
Drugs130
Trials14247
Research
Rankings
Sources & provenance

Data completeness5 / 7 dimensions

Epidemiology (no data yet)
Survival (no data yet)
Trials (data present)
Literature (data present)
Genomics (data present)
Evidence (data present)
Therapies (data present)

Computed from entity_counters.completeness · refreshed after each connector run

Definition

What this entity is

A malignant neoplasm that has spread to other regions from an unknown primary anatomic site.

Definition text as published by ncit-evsProvenance

Source: NCI Thesaurus (NCIt)
Dataset: NCI Thesaurus
Version: 26.08e
Retrieved: Sep 8, 2026
Layer: raw (as published)
Evidence: expert curation
License: CC BY 4.0
Run: ING-NCITEVS-20260908-000001

Open at source Curated

Data updated 22 days agoSource updated 26.08e

Taxonomy

Position in the hierarchies

Several hierarchies coexist; edges are listed per hierarchy type with their source.

Parents

ncit

Secondary Malignant NeoplasmCancer Family

Children (2)

ncit

Carcinoma of Unknown Primary15 sub
Melanoma of Unknown Primary

1,711 descendants in total; counters on this page aggregate over all of them.

Anatomy

Anatomical sites

Data not yet available

No anatomical site linked yet.

Record

Identity

CancerIndex ID: CI-CAN-00001150
Entity type: Subtype
Malignant: Yes
Solid / hematologic: Solid tumor
Pediatric relevant: Not flagged
Rare cancer: Unknown (no incidence data yet)
Hierarchy depth: 4
Classification version: 26.08e
Semantic types: Neoplastic Process
Status: Active
Record updated: 2026-09-08

Coverage

Data completeness

Trials (all / active)

14,247 / 4,158

Publications (all / 5y)

1,145 / 520

Evidence items

532

Genes / variants

2,052 / 283

Drugs (any / approved)

130 / 54

Genomic cohorts

199

Epidemiology / survival obs.

0 / 0

Data updated 19 hours agoSource updated unknowncounters aggregate over descendants

Names

Synonyms (7)

Cancer of Unknown Primarysynonym · NCIt
cancer of unknown primary originsynonym · NCIt
Cancer of Unknown Primary Sitesynonym · NCIt
Metastatic Malignant Neoplasm of Unknown Primarysynonym · NCIt
Metastatic Malignant Neoplasm of Unknown Primary Originsynonym · NCIt
Metastatic Neoplasm of Unknown Primary Originsynonym · NCIt
occult primary tumorsynonym · NCIt

CancerIndex is a research and information platform. It does not diagnose and does not recommend treatment.

Key figures

At a glance

Each figure carries its unit, period and source; ranks link to "Why this rank?".

No registry-level ancestor: burden figures are published for the mutually exclusive top-level site groups only, and this entity does not descend from one. Global figures (IARC / GLOBOCAN) stay under license review and SEER awaits credentials.

Active trials4,158countcurrent registry status · entity + descendantsclinicaltrialsComputedrank #5 of 1,654 (World · both sexes · all ages · latest · all malignant entities)
Recruiting trials2,257countstatus RECRUITING · entity + descendantsclinicaltrialsComputedrank #5 of 1,277 (World · both sexes · all ages · latest · all malignant entities)
Curated evidence items532countaccepted CIViC items · entity + descendantscivicComputedrank #14 of 492 (World · both sexes · all ages · latest · all malignant entities)
Publications, last 12 months95countPubMed records · stored query · 12-month windowpubmedComputedrank #345 of 2,294 (World · both sexes · all ages · latest · all malignant entities)
Genomic cohorts199countopen GDC projects · entity + descendantsgdcComputedrank #3 of 296 (World · both sexes · all ages · latest · all malignant entities)

Data updated 19 hours agoSource updated unknownregistry figures: none · counters aggregate over descendants