The phrase "affect efficacy" is correct and usable in written English.
It can be used in contexts discussing how one factor influences the effectiveness of another, often in scientific or technical writing.
Example: "The study aimed to determine how environmental factors affect efficacy in drug delivery systems."
Alternatives: "influence effectiveness" or "impact performance".
Indeed, antidrug antibodies were detected with all four antibodies [80], but these did not seem to affect efficacy [31].
In addition to the preclinical, clinical and post marketing challenges common to other drugs, unwanted immunogenicity is known to affect efficacy and/or safety of most biotherapeutics.
Furthermore, since one kind of active metabolite considered to affect efficacy was present for zolmitriptan, we collected data regarding the unchanged drug and active metabolite for the present analysis.
The workshop was opened by Jayne Hastedt (JDP Pharma Consulting, USA) who challenged attendees to think about how differences in location and conditions in the lungs vs GI might affect efficacy and safety of drugs delivered to those locations and how better knowledge of those factors might lead to more facile development of new pulmonary pharmaceuticals.
Thus, variations in the time of treatment start would not be expected to affect efficacy results, especially if treatment were given from an earlier age.
Are there patient-related factors that affect efficacy and tolerability?
To determine if variations in common treatments for benign paroxysmal positional vertigo (BPPV) affected efficacy.
Casiana Vera Cruz, from the International Rice Research Institute (IRRI), provided evidence that in addition to high temperatures, drought also differently affects efficacy of Xa4 and Xa7.
For zolmitriptan, data for both the unchanged drug and active metabolite were collected, as an active metabolite that seemingly affected efficacy was considered to be present.
The ApoE genotype has not affected efficacy in short symptomatic AD trials.
Therefore, an NVP-AUY922 intermittent dosing regimen gives optimal tolerability without significantly affecting efficacy.
