A lobby comprised of cancer patients and oncologists are calling on the government to subsidise more cancer drugs on the PBS, due to fears many are missing out.

With the average cancer patient facing $60,000 costs for access, data indicates 3500 patients are accessing the treatment, while more than 6000 are missing out due to the financial burden.

The lobby believes the current practice of only subsidising drugs for specific cancers is holding back treatments from those with rare forms of the disease.