Is it discrimination to apply 'gender' to cancers?

In Canada, we have an event called the Weekend to End all women’s cancer. The money raised from the event only goes to research for five gynecological cancers: ovarian, cervical, uterine, vaginal and vulvar.

Lung cancer is not one of them.

My mom is diagnosed with lung cancer in August; she never smoked and was not exposed to second hand smoke.

Lung cancer kills more women than those six cancers combined but it receives less attention and money.

Cancer is everyone’s disease. My mom is a woman with cancer, why is her cancer being excluded and not considered worthy of receiving research money?

I think its discrimination and unjust to put more attention on some types of cancer over others.