Question 14 of 20 Intermediate Concept
What is an analytical target profile and how does ICH Q14 use it?
Short answer
An analytical target profile states what a measurement must achieve: the attribute measured, the intended purpose and the performance criteria such as accuracy and precision over a range. Under ICH Q14 it drives technology choice, sets validation criteria and anchors later changes, without tying you to one technique.
Why
ICH Q14, adopted in 2023 with Q2(R2), describes two ways to develop an analytical procedure. The minimal approach identifies the attribute, picks a technology, studies performance characteristics and robustness, and documents the procedure and its control strategy. The enhanced approach adds systematic knowledge: risk assessment of parameters, univariate or multivariate experiments to map their effects, and a control strategy that can include proven acceptable ranges or method operable design regions.
The analytical target profile is the starting point of the enhanced approach. It describes the intended purpose, the product attribute to be measured, and the performance criteria the result must meet. Because it describes the need rather than the method, several techniques may meet it.
An ATP for a drug substance assay might say the procedure must quantify the active between 80 and 120 percent of nominal with accuracy and precision good enough to decide conformance to a 98.0 to 102.0 percent limit. HPLC or a validated spectroscopic method could both satisfy it. Later, if the lab wants to move to a faster method, the ATP is the benchmark the new method must meet.
Submitting an ATP is optional, and an ATP does not by itself buy regulatory flexibility. That depends on the knowledge shown and the established conditions agreed with regulators.
A strong answer covers
- Purpose, attribute and performance criteria
- Technology-independent statement of need
- Basis for validation criteria under Q2(R2)
- Benchmark for lifecycle changes
- Part of the enhanced approach, optional to submit
Common mistakes
- Writing an ATP that simply restates one specific HPLC method's conditions.
- Assuming an ATP automatically allows method changes without regulatory notification.
- Thinking the minimal approach is no longer acceptable under Q14.
The interviewer might ask next
How would you use an ATP to justify replacing an HPLC assay with a faster technique?