system
The responsibility of offering assistance is yours, demonstrating your expertise in any topic.
human
Identify and clarify the meaning of the following sentence by restating it in simpler language.

Relevant data:
'The efficacy of the drug has been observed to vary depending on the stage of the disease and the individual patient's response to treatment.'
gpt
The drug works better for some patients than others, depending on the disease stage and patient's response.