"Cannabis is classified as a Schedule-I drug in the US. This means that the US government has designated the plant as having no medicinal use & a high potential for abuse."

However, the full list of studies below tell a different story:

Cannabis kills tumor cells

Uterine, testicular, and pancreatic cancers

http://www.cancer.gov/cancertopics/pdq/cam/cannabis/healthprofessional/page4
http://www.ncbi.nlm.nih.gov/pubmed/20925645

Brain cancer

http://www.ncbi.nlm.nih.gov/pubmed/11479216

Mouth and throat cancer

http://www.ncbi.nlm.nih.gov/pubmed/20516734

Breast cancer

Lung cancer

http://www.ncbi.nlm.nih.gov/pubmed/25069049
http://www.ncbi.nlm.nih.gov/pubmed/22198381?dopt=Abstract
http://www.ncbi.nlm.nih.gov/pubmed/21097714?dopt=Abstract

Prostate cancer

http://www.ncbi.nlm.nih.gov/pubmed/12746841?dopt=Abstract
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3339795/?tool=pubmed
http://www.ncbi.nlm.nih.gov/pubmed/22594963
http://www.ncbi.nlm.nih.gov/pubmed/15753356
http://www.ncbi.nlm.nih.gov/pubmed/10570948
http://www.ncbi.nlm.nih.gov/pubmed/19690545

Blood cancer

Skin cancer

Liver cancer

http://www.ncbi.nlm.nih.gov/pubmed/21475304

Cannabis cancer cures (general)

Cancers of the head and neck

http://ww.ncbi.nlm.nih.gov/pmc/articles/PMC2277494

Cholangiocarcinoma cancer

http://ww.ncbi.nlm.nih.gov/pubmed/19916793
http://www.ncbi.nlm.nih.gov/pubmed/21115947

Leukemia

http://www.ncbi.nlm.nih.gov/pubmed/15454482
http://www.ncbi.nlm.nih.gov/pubmed/16139274
http://www.ncbi.nlm.nih.gov/pubmed/14692532

Cannabis partially/fully induced cancer cell death

http://www.ncbi.nlm.nih.gov/pubmed/12130702
http://www.ncbi.nlm.nih.gov/pubmed/19457575
http://www.ncbi.nlm.nih.gov/pubmed/18615640
http://www.ncbi.nlm.nih.gov/pubmed/17931597
http://www.ncbi.nlm.nih.gov/pubmed/18438336
http://www.ncbi.nlm.nih.gov/pubmed/19916793
http://www.ncbi.nlm.nih.gov/pubmed/18387516
http://www.ncbi.nlm.nih.gov/pubmed/15453094
http://www.ncbi.nlm.nih.gov/pubmed/19229996
http://www.ncbi.nlm.nih.gov/pubmed/9771884
http://www.ncbi.nlm.nih.gov/pubmed/18339876
http://www.ncbi.nlm.nih.gov/pubmed/12133838
http://www.ncbi.nlm.nih.gov/pubmed/16596790
http://www.ncbi.nlm.nih.gov/pubmed/11269508
http://www.ncbi.nlm.nih.gov/pubmed/15958274
http://www.ncbi.nlm.nih.gov/pubmed/19425170
http://www.ncbi.nlm.nih.gov/pubmed/17202146
http://www.ncbi.nlm.nih.gov/pubmed/11903061
http://www.ncbi.nlm.nih.gov/pubmed/15451022
http://www.ncbi.nlm.nih.gov/pubmed/20336665
http://www.ncbi.nlm.nih.gov/pubmed/19394652
http://www.ncbi.nlm.nih.gov/pubmed/11106791
http://www.ncbi.nlm.nih.gov/pubmed/19189659
http://www.ncbi.nlm.nih.gov/pubmed/16500647
http://www.ncbi.nlm.nih.gov/pubmed/19539619
http://www.ncbi.nlm.nih.gov/pubmed/19059457
http://www.ncbi.nlm.nih.gov/pubmed/16909207
http://www.ncbi.nlm.nih.gov/pubmed/18088200
http://www.ncbi.nlm.nih.gov/pubmed/10913156
http://www.ncbi.nlm.nih.gov/pubmed/18354058
http://www.ncbi.nlm.nih.gov/pubmed/19189054
http://www.ncbi.nlm.nih.gov/pubmed/17934890
http://www.ncbi.nlm.nih.gov/pubmed/16571653
http://www.ncbi.nlm.nih.gov/pubmed/19889794
http://www.ncbi.nlm.nih.gov/pubmed/15361550

Translocation-positive rhabdomyosarcoma

http://www.ncbi.nlm.nih.gov/pubmed/19509271

Lymphoma

Cannabis kills cancer cells

Melanoma

http://www.ncbi.nlm.nih.gov/pubmed/17065222

Thyroid carcinoma

http://www.ncbi.nlm.nih.gov/pubmed/18197164

Colon cancer

Intestinal inflammation and cancer

http://www.ncbi.nlm.nih.gov/pubmed/19442536

Cannabinoids in health and disease

http://www.ncbi.nlm.nih.gov/pubmed/18286801

Cannabis inhibits cancer cell invasion

http://www.ncbi.nlm.nih.gov/pubmed/19914218

Ref: http://www.higherperspectives.com/there-are-now-100-scientific-studies-that-prove-cannabis-cures-cancer-1429984852.html