German Startup Times Cancer Treatment to Body's Internal Clock

Cancer patients often stop treatment because the side effects become unbearable. But what if the problem isn't just the medicine itself, but the time of day it's given?

Angela Relógio, a physicist and molecular biologist, spent years watching cancer patients struggle with treatment side effects. She became convinced that timing treatments to match each person's internal clock could make them more tolerable and effective.

That conviction led her to develop TimeTeller, a saliva test kit that maps individual circadian rhythms. Unlike the overhyped at-home testing industry, Relógio is careful about what her test can and cannot do today.

The direct-to-consumer kit currently helps longevity clinics offer personalized advice on sleep, nutrition, and activity schedules. But Relógio's real goal is more ambitious: determining the optimal time to administer cancer treatments for each patient.

She's honest that this bigger vision requires clinical studies for every medicine. "That is something we need to calculate for every single medicine," she explained, emphasizing the careful research ahead.

The startup has already made real progress. TimeTeller secured a partnership with Techniker Krankenkasse, one of Germany's largest health insurers, which reimburses the test cost for certain cancer patients. Both partners are now expanding access to more of the insurer's 12 million members.

Relógio personally funded TimeTeller's first patent because she refused to let her discovery stay buried in scientific journals. The company spun out of Berlin's Charité university hospital and now operates from Medical School Hamburg, which provides patient access and funding.

The Ripple Effect

TimeTeller's approach could extend far beyond cancer. The circadian rhythm testing could apply to diabetes, Alzheimer's disease, women's health, and athletic performance. After all, as Relógio notes, almost every process in our body runs on an internal clock.

The startup's team of 10 is building a future where "when" matters as much as "what" in medical treatment. For cancer patients facing difficult side effects, that future is already beginning to arrive.