Brain Tumor Investment Fund
Newton, Massachusetts, United StatesFounded 2019
The Brain Tumor Investment Fund (BTIF) is a venture philanthropy fund and affiliate of the National Brain Tumor Society (NBTS) that invests philanthropic capital in biotechnology, pharmaceutical, and medical device companies developing treatments and diagnostics for brain tumors.
36% of their portfolio is in Biotech & Life Sciences. Their most common stage is series-a (45% of deals). Average disclosed round size is $44.4M (across 10 rounds with reported amounts).
Portfolio
6
Fund Size
—
Top Stage
Series A
Last 12 Mo
3
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
11 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Cordance | Seed | $8M | Nov 2025 |
 Trogenix | Series A | — | Oct 2025 |
 Trogenix | Series A | $70M | Oct 2025 |
 Diakonos Oncology | Unknown | $20M | May 2025 |
 Alpheus Medical | Series B | $52M | May 2025 |
| AAlpheus | Series B | $52M | May 2025 |
| Alpheus Medical | Series A | $52M | May 2025 |
| AAlpheus | Series B | $52M | Jan 2025 |
| Trogenix | Series A | $70M | Jan 2025 |
| Alpheus Medical | Series B | $52M | Jan 2025 |
| AAlpheus | Series A | $16M | Nov 2021 |
Top Co-Investors
Samsara BioCapital6 shared
HealthQuest Capital5 shared
BrightEdge5 shared
OrbiMed5 shared
Action Potential Venture Capital3 shared
4BIO Capital3 shared
Cancer Research Horizons3 shared
IQ Capital3 shared
Calculus Capital3 shared
LongeVC3 shared
Eli Lilly and Company3 shared
Sontag Innovation Fund2 shared
OrbiMed Asia1 shared
SV Health Investors1 shared
R421 shared
Aquiline Capital Partners1 shared
Last updated: 7 October 2026