aid: mariana-oncology
name: Mariana Oncology
description: 'Mariana Oncology, a Novartis company, is a Watertown, Massachusetts biotechnology
  company developing precision radioligand therapies (RLTs) — targeted radiopharmaceuticals
  that deliver alpha- and beta-emitting radioisotopes selectively to tumor cells while
  sparing healthy tissue. Its pipeline pursues solid-tumor targets including DLL3-expressing
  small cell lung cancer (MC-339), alongside breast and prostate programs, and it operates
  a Radioligand Therapy Innovation Center of Excellence for radiochemistry, isotope handling
  and clinical supply. Founded in 2020 and acquired by Novartis in May 2024, Mariana Oncology
  is a therapeutics developer, not a software vendor: it publishes no developer program,
  no public API, and no machine-readable interface of any kind.'
url: https://raw.githubusercontent.com/api-evangelist/mariana-oncology/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
image: https://marianaoncology.com/mariana-og-image.png
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-25'
modified: '2026-08-25'
tags:
- Company
- Biotechnology
- Pharmaceuticals
- Oncology
- Radiopharmaceuticals
- Radioligand Therapy
- Life Sciences
- Healthcare
- Clinical Research
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/mariana-oncology-domain-security.yml
- type: Website
  url: https://marianaoncology.com/
- type: Blog
  url: https://marianaoncology.com/news/
- type: Contact
  url: https://marianaoncology.com/contact/
- type: TermsOfService
  url: https://marianaoncology.com/terms-of-use/
- type: PrivacyPolicy
  url: https://marianaoncology.com/privacy-statement/
- type: LinkedIn
  url: https://www.linkedin.com/company/marianaoncology
- type: ParentCompany
  name: Novartis AG
  url: https://www.novartis.com/
- type: ParentCompanyProfile
  name: Novartis in the API Evangelist Network
  url: https://github.com/api-evangelist/novartis
- type: AcquisitionAnnouncement
  name: Mariana Oncology to be Acquired by Novartis
  url: https://marianaoncology.com/news/mariana-oncology-to-be-acquired-by-novartis-to-advance-precision-radiopharmaceuticals-to-treat-cancer/
x-enrichment:
  date: '2026-08-25'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: >-
    Mariana Oncology, a Novartis company, is a preclinical-stage radioligand-therapy
    developer whose entire web presence is a 23-URL Gatsby marketing site (sitemap-0.xml)
    with no developer, docs or API section; api./developer./docs./portal.marianaoncology.com
    are NXDOMAIN, there is no GitHub organization under any spelling of the name, and every
    contract-discovery path on the one live host returns the site's 404 shell.
  evidence:
  - url: https://marianaoncology.com/openapi.json
    status: 404
  - url: https://marianaoncology.com/.well-known/agent-card.json
    status: 404
  - url: https://marianaoncology.com/graphql
    status: 404
  - url: https://marianaoncology.com/sitemap-0.xml
    status: 200
  - url: https://api.github.com/orgs/mariana-oncology
    status: 404
  checked: '2026-08-25'