After 25 years of research, Cuban officials have begun production on a vaccine for lung cancer, China's Xinhuanet reported.

The vaccine, or CimaVax-EGF, works through the active drug ingredient, which is based on "a protein we all have when cancer is uncontrolled," as the publication reported.

CimaVax-EGF isn't a preventative vaccine, but attacks the already-existing cancer in a patient, PopScience elaborated.

The vaccine has allegedly been tested on 1,000 patients in Cuba, but it's difficult to verify. If so, it could greatly improve the outlook of patients with what is widely regarded as one of the most deadly and common forms of cancer.

Gisela Gonzalez, head researcher of the project, told the Chinese news source that she is optimistic for the drug's future.

"The drug could turn the cancer into a manageable, chronic disease by generating antibodies against the proteins which triggered the uncontrolled cell proliferation. It is not possible to prevent the disease but this vaccine improves significantly the status of the critically ill patients."

More than 14 other forms of cancer are currently in trials for vaccines in the US, and only two of those are preventative vaccines.

Although the medical advancement is difficult to confirm 100 percent, there have been significant strides forward in cancer research last month. One of which is a new treatment which has been found to almost completely eradicate leukemia. The next step for that treatment is test it on different types of the cancer, which could include other types of tumors.

The drug Xalkori was also approved earlier this month in the United States for treating the advanced, deadly form of lung cancer for a select group of patients, an idea in line with personalized medicine, the Associated Press reported.