so far, this is all i can find...

Specific vitamins and minerals can often be helpful and sometimes harmful. Multivitamins, and especially the full spectrum of the B-group, have sometimes been observed to accelerate tumor growth. The recommended raw-food diet will supply sufficient vitamins and minerals for the metabolic needs of most individuals, except with malabsorption.

Copper is a part of many oxidizing enzymes and can help to normalize the energy metabolism. It also strengthens the immune system and, especially as copper salicylate, is strongly anti-inflammatory. However, copper also increases angiogenesis, the formation of new blood vessels in tumors and so stimulates their growth. Therefore, if you have tumors, avoid all copper supplementation, and use copper salicylate only externally for treating skin cancers. The most important use of copper is in cancer prevention, while with established and especially fast-growing cancers, it is important to deny copper to cancer cells through a high intake of zinc. Tumors store copper and it can take several months before copper depletion shows a beneficial effect. Therefore, tetrathiomolybdate, or TM, has been experimentally used to leech copper out of the body.

http://health-science-spirit.com/cancer5-nutrients.html