# InterWest Partners' Biotech Investments: 21 Startups in Its Portfolio (2026) > The 21 Biotech startups InterWest Partners has backed, by stage: $3.0B raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/interwest-partners-biotech-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Series C and later 9 - [CVRx](https://millionrounds.com/company/cvrx) - [Welltok](https://millionrounds.com/company/welltok) - [Avedro](https://millionrounds.com/company/avedro) - [ReVision Optics](https://millionrounds.com/company/revision-optics) - [Neuronetics](https://millionrounds.com/company/neuronetics) - [Sera Prognostics](https://millionrounds.com/company/sera-prognostics) - [Integrated Diagnostics](https://millionrounds.com/company/integrated-diagnostics) - [*C* Centrexion](https://millionrounds.com/company/centrexion) - [*PP* PMV Pharma](https://millionrounds.com/company/pmv-pharma) ## Stage not reported 4 - [Celladon](https://millionrounds.com/company/celladon) - [NeuroPace](https://millionrounds.com/company/neuropace) - [*C* Cebix](https://millionrounds.com/company/cebix) - [*G* Gobiquity](https://millionrounds.com/company/gobiquity) ## Series B 3 - [*CT* Cidara Therapeutics](https://millionrounds.com/company/cidara-therapeutics) - [Cardiac Dimensions](https://millionrounds.com/company/cardiac-dimensions) - [Lycera](https://millionrounds.com/company/lycera) ## Series A 3 - [*LB* Labrys Biologics](https://millionrounds.com/company/labrys-biologics) - [Sequel Pharmaceuticals](https://millionrounds.com/company/sequel-pharmaceuticals) - [Arcion Therapeutics](https://millionrounds.com/company/arcion-therapeutics) ## Growth 2 - [Gynesonics](https://millionrounds.com/company/gynesonics) - [Alvine Pharmaceuticals](https://millionrounds.com/company/alvine-pharmaceuticals) ## Segment by segment ### Series C and later 9 startups · $1.4B raised - [**CVRx**](https://millionrounds.com/company/cvrx) CVRx is a medical device company developing implantable technology for the treatment of high blood pressure. United States $369M - [**Welltok**](https://millionrounds.com/company/welltok) Silverlink Communications is a healthcare IT company that develops solutions for patient communications and engagement. United States $239M - [**Avedro**](https://millionrounds.com/company/avedro) Avedro is a medical device and pharmaceutical company advancing the science and technology of corneal cross-linking. United States $203M - [**ReVision Optics**](https://millionrounds.com/company/revision-optics) ReVision Optics offers PRESBYLENS, a refractive surgery solution to correct vision loss by the natural aging process. United States $172M - [**Neuronetics**](https://millionrounds.com/company/neuronetics) Neuronetics is a medical device company that develops non-invasive therapies for psychiatric and neurological disorders. United States $110M - [**Sera Prognostics**](https://millionrounds.com/company/sera-prognostics) Sera Prognostics develops blood tests that are predictive of preterm birth, preeclampsia, and other pregnancy complications. United States $107M - [**Integrated Diagnostics**](https://millionrounds.com/company/integrated-diagnostics) Integrated Diagnostics develops tools to help physicians diagnose complex diseases with a non-invasive blood test. United States $95M - [*C* **Centrexion**](https://millionrounds.com/company/centrexion) United States $90M ### Stage not reported 4 startups · $415M raised - [**Celladon**](https://millionrounds.com/company/celladon) Celladon is a biotechnology company developing molecular therapies for the treatment of heart failure. United States $172M - [**NeuroPace**](https://millionrounds.com/company/neuropace) NeuroPace develops and markets implantable devices for the treatment of neurological disorders. United States $141M - [*C* **Cebix**](https://millionrounds.com/company/cebix) Cebix is a biopharmaceutical company focused on the treatment of diabetic complications. United States $96M - [*G* **Gobiquity**](https://millionrounds.com/company/gobiquity) United States $6.0M ### Series B 3 startups · $688M raised - [*CT* **Cidara Therapeutics**](https://millionrounds.com/company/cidara-therapeutics) Cidara Therapeutics is a biotechnology company that specializes in the fields of healthcare and therapeutics. United States $463M - [**Cardiac Dimensions**](https://millionrounds.com/company/cardiac-dimensions) Cardiac Dimensions is a medical device company based in Kirkland, Washington, founded in 2001. United States $150M - [**Lycera**](https://millionrounds.com/company/lycera) Lycera discovers and develops small-molecule immunomodulators for the treatment of autoimmune diseases and cancer. United States $75M ### Series A 3 startups · $88M raised - [*LB* **Labrys Biologics**](https://millionrounds.com/company/labrys-biologics) Labrys Biologics develops treatments for chronic migraine. - $46M - [**Sequel Pharmaceuticals**](https://millionrounds.com/company/sequel-pharmaceuticals) Sequel Pharmaceuticals develops and commercializes novel and clinical-stage drug candidates for patients with cardiovascular disease. United States $25M - [**Arcion Therapeutics**](https://millionrounds.com/company/arcion-therapeutics) Arcion Therapeutics is a biotechnology company developing treatments for chronic pain. United States $17M ### Growth 2 startups · $352M raised - [**Gynesonics**](https://millionrounds.com/company/gynesonics) Gynesonics develops transcervical, uterus-preserving, incision-less technologies for diagnostic and therapeutic applications. United States $214M - [**Alvine Pharmaceuticals**](https://millionrounds.com/company/alvine-pharmaceuticals) Alvine Pharmaceuticals is a biotechnology company developing therapeutics for autoimmune and inflammatory diseases. United States $138M **How this map is made.** Every startup here works in Biotech and has raised money in a round we track that names InterWest Partners as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Co-investors **Who invests with InterWest Partners** 96 co-investors](https://millionrounds.com/portfolio-maps/interwest-partners-co-investors)[Portfolio map **InterWest Partners portfolio map** 61 startups · $5.4B](https://millionrounds.com/portfolio-maps/interwest-partners-portfolio-map)[Sector portfolio **Techstars' AI portfolio** 336 startups · $4.9B](https://millionrounds.com/portfolio-maps/techstars-ai-portfolio)[Sector portfolio **Alumni Ventures' AI portfolio** 302 startups · $36B](https://millionrounds.com/portfolio-maps/us-strategic-tech-fund-an-alumni-ventures-fund-ai-portfolio)[Sector portfolio **Andreessen Horowitz's AI portfolio** 259 startups · $426B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-ai-portfolio)[Sector portfolio **General Catalyst's AI portfolio** 226 startups · $179B](https://millionrounds.com/portfolio-maps/general-catalyst-ai-portfolio) ## Raising from investors like InterWest Partners? 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