A decade in: a note on progress
Ten years, fourteen subjects, eleven continuing. A summary of where the programme stands, and where it is going.
Dr. Tobias Wren · 21 Sep 2026 · 2 min read
This year the programme turns ten. We want to say, plainly, where it stands.
The numbers
- 10 years of research
- 14 primate subjects transferred
- 11 subjects currently continuing
- 0 adverse events
We are often asked about the three subjects who are not on the list of those continuing. They have been reassigned. We are not able to discuss the reassignments. We have, however, thanked them, and the thanks have been recorded.
What we have learned
Three findings have shaped everything we do.
- Mapping fidelity matters more than speed. Early transfers were fast. They were also, in the words of one reviewer, "enthusiastic". We slowed down.
- Subjects with companions do better. We now transfer in pairs wherever we can.
- Subjects remember being asked. We cannot say how. We have stopped asking them how.
What comes next
After ten years of work with our closest relatives, the programme is ready to extend to human volunteers. Registration is open to people of every age. A first cohort will be selected from the Reserve List, in order, unless the order is changed.
A note on Site 4
Several readers have written to ask about Site 4. Site 4 is performing as expected. We would like to thank those readers for their interest, which has been noted.
Thank you for ten years. It was, by our records, the best one yet.