By Jonathan Matsey, WSJ
For many life sciences companies, setbacks during all-important clinical trials can be a death knell. But sometimes it just means you have to go back and tweak the criteria a little.
Trial parameters are key to passing muster with the Food and Drug Administration for both drugs and devices, and companies can have setbacks with good products due to the structure and endpoints established for the study.
Take the case of PhotoThera Inc. Despite failing to meet the endpoints on its previous clinical trial, PhotoThera’s underlying technology earned it a new, $50 million venture round this week as it sets out for another round of human studies.
The company conducted a trial for NeuroThera, a non-invasive device that uses infrared lasers to treat patients up to 24 hours after an ischemic stroke. The device would be a significant improvement over existing tissue plasminogen activator drugs, which work only three hours after, or highly invasive devices.
But the company’s trial, which completed enrollment of 660 patients late last year, was broad in its inclusion criteria, including severely affected patients who were harder to treat.
“It was an all-comers trial that allowed us to get fast recruitment, said Kerry Dance, managing director at Hamilton BioVentures. “We just had a lot of people who ruined our standards.”
In the new trial, expected to take three to four years, PhotoThera hopes to gain the same statistically significant results it did in the earlier trial and be able to meet its primary endpoints. “But just by moving down to slightly less severe strokes, we would have succeeded,” said James Bochnowski, general partner at Delphi Ventures, another PhotoThera investor.
Other companies have recently been successful in raising additional cash for trial re-dos, including Angstrom Pharmaceuticals Inc., which took an additional $3 million in January to launch a new Phase II clinical trial for its lead ovarian cancer peptide treatment after the standard-of-care for the disease shifted mid-study.
And last February, Avera Pharmaceuticals Inc. took a $9 million recap to re-launch clinical trials on a drug for irritable bowel syndrome and overactive bladder after problems with a non-active metabolite.
As in those cases, it was a belief in a strong underlying technology that brought PhotoThera’s investors back. “PhotoThera has a potential treatment for acute ischemic stroke, which is a huge unmet clinical need,” said Bochnowski of Delphi, whose firm joined Warburg Pincus, the lead, De Novo Ventures, Hamilton, Solstice Capital, Vertical Group and individuals in an insider Series D.