This certainly doesn't cover all research funding, and it is in US, not Canada, but in 2022 the National Cancer Institute gave $580 million in grants for breast cancer research, and $280 million for prostate. That ratio has been steady for years:
https://www.cancer.gov/about-nci/budget/fact-book/data/research-funding
OTOH, There are more new breast cases /year (43,000 breast/34,000), yet more prostate deaths (30,000 prostate/27,000).
https://www.cancer.org/research/cancer-facts-statistics/all-cancer-facts-figures/cancer-facts-figures-2021.html