The statement "Every human gene has been sequenced" is not entirely accurate. While we have made significant progress in sequencing the human genome, there are still some gaps and variations that remain to be fully understood.

However, the project that made this extensive sequencing possible was the Human Genome Project (HGP).

Here's a breakdown:

* The Human Genome Project (HGP) was an international research effort that aimed to determine the complete sequence of DNA that makes up the human genome.

* It was completed in 2003, providing us with a blueprint of the human genetic code.

* While the HGP sequenced the vast majority of the human genome, there are still some regions that are difficult to sequence due to their complex structure or repetitive nature.

* The HGP's success has paved the way for many advancements in personalized medicine, disease research, and genetic testing.

So, while not every single gene has been perfectly sequenced, the Human Genome Project is the key reason we have a comprehensive understanding of the human genome.