Sid Sijbrandij

We did radiation, did chemo.

And I did my first single patient IND.

Since 2017, I've invested in one other Y Combinator company.

And over time, that guy became my best friend.

His wife became my wife's best friend.

And every time he was fundraising, the investors wouldn't put any money in.

And every time I said, this doesn't make any sense to me that they're reluctant to put money in, I'll finance the company.

So over time, I became his biggest investor.

and what he's doing is is combining drugs with binders through click chemistry allowing you to target different parts of the body and when i became so very sick he he made a we asked for an exception to treat me with his drug and we got that exception

And we did all the treatments.

And then two years later, in 24, the cancer started growing again.

And the doctor said, you're done with standard of care.

There's no more treatment we have for you.

Maybe there's a trial somewhere.

And I started looking around.

I have a weird HLA type, which disqualified me from a few trials.

And I have a bone cancer, osteosarcoma.

It's kind of a rarer disease.

So there wasn't anything for me.

And then it was my oh, shit moment.