This is not a sentimental platitude. It is the first principle of Good Clinical Practice, positioned deliberately at the beginning of ICH E6(R3) because everything else flows from it. When investigators face difficult decisions during trial conduct, when new safety information emerges that challenges assumptions, when enrollment pressures mount and timelines slip, this principle should be the compass that guides every choice.

I have spent decades watching research professionals navigate ethical complexity, and I can tell you that those who internalize this principle make better decisions under pressure. They do not need to consult regulations because their instinct has been trained by a fundamental conviction: participant rights, safety, and well-being prevail over the interests of science and society.

This lesson examines Principle 1 in detail, its historical connection to the Declaration of Helsinki, and each of its six sub-principles that translate this commitment into daily practice.

This is not a sentimental platitude. It is the first principle of Good Clinical Practice, positioned deliberately at the beginning of ICH E6(R3) because everything else flows from it. When investigators face difficult decisions during trial conduct, when new safety information emerges that challenges assumptions, when enrollment pressures mount and timelines slip, this principle should be the compass that guides every choice.

I have spent decades watching research professionals navigate ethical complexity, and I can tell you that those who internalize this principle make better decisions under pressure. They do not need to consult regulations because their instinct has been trained by a fundamental conviction: participant rights, safety, and well-being prevail over the interests of science and society.

This lesson examines Principle 1 in detail, its historical connection to the Declaration of Helsinki, and each of its six sub-principles that translate this commitment into daily practice.