Targeted therapy is called targeting because this kind of molecular targeted drugs are designed to "destruct" some mutated genes of tumor cells, and theoretically only tumor cells with these mutated genes can be killed.

Only by targeted selection of the corresponding molecular targeted drugs after relevant gene testing can all patients get accurate and timely individualized treatment, while for patients without targeted drugs designed for gene mutation, it is necessary to avoid accompanying therapy or overtreatment.

However, it is even more blind for patients to treat with targeted drugs just after hearing that they are suitable for this targeted drug. It may be lucky and effective, but the disease is controlled, or it may be ineffective or ineffective, and the disease still progresses as a result. This is obviously irrational. Extended data

For ordinary drugs, only a few of them can really act on the lesion site after entering the body. This is the fundamental reason that restricts the curative effect of drugs and leads to the toxic and side effects of drugs. It is a dream of human beings and the ultimate goal of drug development to obtain drugs with accurate targeting ability like missiles.

targeted drugs (also called targeted preparations) refer to drugs or their preparations endowed with Targeting ability. Its purpose is to make drugs or their carriers aim at specific lesion sites and accumulate or release effective components at the target sites. Targeted preparation can make the drug form a relatively high concentration in the target part, so as to improve the efficacy and inhibit the side effects and reduce the damage to normal tissues and cells.

Reference: Baidu Encyclopedia-Targeted Drugs