It may seem like a very niche genre, but a number of films that mix drama and comedy over the last few years do so by having cancer worked into the plot. 

Chris Kelly’s Other People is one of the best films of its kind as its emotional peaks are so comedically high and valleys are so dramatically grounded, all in the best, life affirming way possible. Molly Shannon gives a performance of a lifetime and then some as well. 

You should definitely go see Other People in select theaters while you still can or buy it on iTunes.