A potent treatment effect of Alpha1H has previously been reported in mice with bladder cancer. We now show that continued treatment can provide long-term protection as well. Repeated treatment prevented tumor growth and the bladders remained similar to the control group without tumors.

In contrast, mice treated with placebo showed rapid tumor progression and severe disease after 12 days. The first round of Alpha1H treatment prevented tumor development for 4 weeks and long-term protection was achieved when treatment was repeated at 4-week intervals, as evidenced by marked differences in tumor size, pathology score, biomarkers and gene expression.

Cancer is often a chronic condition and several rounds of treatment are usually necessary. The results presented here suggest that repeated Alpha1H treatment regimens may be beneficial to ensure long-term protection against bladder cancer. This needs further validation in future clinical trials.

`'Repeated treatment rounds appeared to maintain a high degree of protection against tumor progression in mice'', says Catharina Svanborg, CMO and chairman of the board of Hamlet Pharma Ltd. 

`'This information is important for the design of future clinical trials'', says Mats Persson, CEO of Hamlet Pharma Ltd.

This disclosure contains information that Hamlet is obliged to make public pursuant to the EU Market Abuse Regulation (EU nr 596/2014). The information was submitted for publication, through the agency of the contact person, on 18-03-2021 08:45 CET.