A series of studies presented December 8 at the American College of Neuropsychopharmacology (ACNP) annual meeting elucidates evidence that there is a genetic link between schizophrenia and cancer, providing a surprising possible scientific explanation for lower rates of cancer among patients with schizophrenia -- despite having poor diets and high rates of smoking -- and their parents.
Researchers at the National Institute for Mental Health (NIMH) emphasize that many of the genes associated with schizophrenia are the same as the genes associated with cancer, but that the cells that have these genes use them in opposite ways in the two disorders. While cancer results from changes in the genes that cause cells to go into metabolic overdrive and multiply rapidly, those same genes cause cells in schizophrenia to slow to a crawl.
"We found that many of the same genes are involved in schizophrenia as in cancer, but in a yin and yang way. This will provide critical insight into the molecular structure of schizophrenia," said lead researcher and ACNP member Dr. Daniel Weinberger of NIMH. Some of the genes showing this yin-yang effect include NRG1, AKT1, PIK3, COMT, PRODH and ErbB4. While these genes can't be used to predict exactly who will develop these diseases, Dr. Weinberger says they can be used to help determine risk.
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