Chi­nese play­er joins a grow­ing group of biotechs buy­ing in­to Synaf­fix's ADC link­er tech

In de­vel­op­ing any an­ti­body-drug con­ju­gate, the link­er — the hy­phen be­tween the anti­gen-bind­ing an­ti­body and the can­cer-killing drug — is of ut­most im­por­tance. Link too much pay­load to the an­ti­body too loose­ly, and you risk trig­ger­ing off-site tox­i­c­i­ty while the ADC is cir­cu­lat­ing through blood; link too lit­tle, and it falls short of the goal to kill off can­cer cells from with­in. And while a host of drug­mak­ers have fol­lowed Seat­tle Ge­net­ics’ lead in­to new link­er tech­nol­o­gy, in some cas­es de­ploy­ing en­gi­neer­ing the an­ti­bod­ies, there’s still much to be learned about con­trol­ling the re­sult­ing AD­Cs.

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