# Ansun Biopharma

**Canonical:** https://apis.io/providers/ansun-biopharma/  
**Website:** https://www.ansunbiopharma.com/  
**APIs profiled:** 0

Ansun Biopharma is a privately held, clinical-stage biopharmaceutical company headquartered in the Sorrento Valley district of San Diego, California, founded in 2003 by virologists and molecular biologists and led by CEO Dr. Nancy Chang. Rather than targeting viruses directly, Ansun develops host-directed immuno-biologic therapies built on a recombinant sialidase platform. Its lead candidate, DAS181 (Ansun-181), is a multi-function sialidase fusion protein that removes the sialic acid receptors respiratory viruses use to enter host cells, and has been studied in parainfluenza virus (PIV), severe influenza, human metapneumovirus and COVID-19 in immunocompromised and hospitalized patients. The company also advances earlier-stage programs in oncology and autoimmune disease from the same sialidase platform. Ansun is a drug developer, not a software vendor: it publishes a corporate WordPress site covering its pipeline, research and technologies, publications, intellectual property, investors, news and careers, and exposes no public API, SDK, developer portal or machine-readable specification.

## Kin Score — 6.4 / 100 (minimal)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 6.4).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.2 |
| Commercial Clarity | 0.0 |

Regulatory layer — **Health**: 7.5 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Security (1)

- **Ansun Biopharma Domain Security** — TLSv1.2 · DMARC

## Tags

Company, Biotechnology, Biopharmaceutical, Life Sciences, Clinical Trials, Antivirals, Health, Drug Development, San Diego

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/ansun-biopharma/). Scores are computed from the provider's own public artifacts under a published rubric.