Whole-Genome Sequencing and Gene Patents Coexist (For Now)
In a recent post, John Conley analyzed the ACLU’s lawsuit challenging Myriad Genetics’ patents on the BRCA-1 and BRCA-2 “breast and ovarian cancer susceptibility” genes. Several readers responded with the same general inquiry: if an individual undergoes a whole-genome sequence analysis, will the individual (or the company providing the sequence) be required to pay royalties to Myriad because the BRCA-1 and -2 loci will have been sequenced?
Although focused on the BRCA genes, the question is broadly applicable to the entire genome sequencing industry: when sequencing all or a portion (e.g., the exome) of an individual’s genome, are individual gene patents infringed upon by either the company providing the sequence or the individual purchasing or requesting it? The answer is not entirely clear, but, at least in the case of Myriad and the BRCA genes, it appears to be no. Or at least, not yet.
Let’s begin with what is not patented, which includes a majority of genes and the vast majority of the human genome. Genes—those stretches of DNA that encode for proteins—make up approximately 2% of the human genome. The estimate of the exact number of genes ranges from between roughly 20,000 to 30,000 and, of those, a 2005 study in the journal Science found that only 20% of human gene DNA sequences are patented (subscription). Although those numbers are certainly subject to change, the reality is that, today, it is likely that less than 1% of the entire human genome has been patented.
Of course, that very small number belies the fact that the genes which have been patented consist of some of the most important identified genes associated with the prediction or determination of human health and disease. The high-profile BRCA genes are an excellent example and thus make for a good case study.
