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John Treffert

John Treffert

Bladder cancer patient advocate and owner of Treffert Innovations LLC in Powell, TN

Jul 30, 2026

1:09
How did you first hear about ADCs? Is there anything you know now that you wish you had known then?
1:15
I was working for a radiation oncology software company based in Sweden when I saw blood in my urine.
1:23
And I was familiar with cancer from my pet work in terms of brain cancer, lung cancer, but bladder was not on my radar at all.
1:34
My wife insisted that I go see my GP.
1:37
My GP was worried enough that we had a CT done that found some wall thickening that was suspicious for bladder cancer.
1:48
And he referred me to a urologist he knew where I had my first cystoscopy ever, where we saw a large tumor that was obstructing the right ureter and leading to a little bit of back pain due to hydronephrosis.
2:04
I got introduced, I was diagnosed under managed care, which was the first time I'd ever really needed insurance.
5:34
I think, extraordinary.

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