CPI Patient Assessment & Evaluation 3 — Questions and Answers
Question 1: According to CTCAE v5.0, a subject experiences alanine aminotransferase (ALT) elevation at 4 times the upper limit of normal (ULN) with no symptoms. This represents which grade of adverse event?
- Grade 1
- Grade 2
- Grade 3 (Correct answer)
- Grade 4
Correct answer: Grade 3
CTCAE Grade 3 for ALT elevation is defined as >3.0–20x ULN, so a 4x ULN elevation falls within Grade 3.
Question 2: A subject enrolled in a renal oncology trial has an eGFR of 28 mL/min/1.73m². The protocol requires eGFR ≥30 mL/min/1.73m² for continued participation. What action is required?
- Continue the subject on study with more frequent lab monitoring
- Discontinue the investigational product and notify the sponsor per protocol (Correct answer)
- Reduce the investigational drug dose by 50% and continue
- Repeat the eGFR in 1 week and discontinue only if still <30
Correct answer: Discontinue the investigational product and notify the sponsor per protocol
A laboratory value that no longer meets a protocol-required threshold typically mandates discontinuation of the investigational product and sponsor notification per the protocol-specified procedures.
Question 3: At a routine study visit, a subject's blood pressure reads 178/104 mmHg. The subject feels well and has no symptoms. As the investigator, what is the FIRST priority?
- Document the finding and proceed with the study visit
- Assess the subject clinically, determine if intervention is needed, and document findings (Correct answer)
- Immediately discontinue the investigational product
- Report this as a serious adverse event to the IRB
Correct answer: Assess the subject clinically, determine if intervention is needed, and document findings
The investigator's first priority is always subject safety: assess the clinical situation, determine need for intervention, and then document findings and any protocol-required actions.
Question 4: A 12-lead ECG performed at screening shows sinus bradycardia with a heart rate of 52 bpm. The protocol excludes subjects with HR <50 bpm. How should this finding be handled?
- Exclude the subject because HR is below 55 bpm
- Enroll the subject because HR of 52 meets the protocol threshold of >50 bpm (Correct answer)
- Repeat the ECG three times and use the average
- Consult cardiology before making an enrollment decision
Correct answer: Enroll the subject because HR of 52 meets the protocol threshold of >50 bpm
A heart rate of 52 bpm exceeds the exclusion threshold of <50 bpm, so the subject meets this ECG criterion for enrollment.
Question 5: Hepatic function assessment in a clinical trial typically includes which combination of laboratory tests?
- BUN, creatinine, and eGFR
- ALT, AST, alkaline phosphatase, and total bilirubin (Correct answer)
- CBC with differential and platelet count
- TSH, free T4, and cortisol
Correct answer: ALT, AST, alkaline phosphatase, and total bilirubin
Hepatic function is assessed with liver enzymes (ALT, AST, ALP) and total bilirubin, which together reflect hepatocellular damage and biliary function.
Question 6: A subject reports taking St. John's Wort herbal supplement daily. Why is this significant during patient assessment in a clinical trial?
- It is not significant because herbal supplements are not medications
- St. John's Wort is a potent CYP3A4 inducer that can alter investigational drug metabolism (Correct answer)
- It only matters if the subject is also taking anticoagulants
- Herbal supplements require IRB approval before they can be taken on trial
Correct answer: St. John's Wort is a potent CYP3A4 inducer that can alter investigational drug metabolism
St. John's Wort strongly induces CYP3A4 enzymes, which can significantly reduce plasma levels of many investigational drugs and compromise efficacy or safety assessments.
Question 7: A subject's creatinine clearance is calculated using the Cockcroft-Gault formula. Which variables are required for this calculation?
- Age, weight, height, and serum albumin
- Age, weight, sex, and serum creatinine (Correct answer)
- Body surface area, serum creatinine, and urine output
- Serum creatinine and serum cystatin C only
Correct answer: Age, weight, sex, and serum creatinine
The Cockcroft-Gault formula requires age, body weight, sex (correction factor of 0.85 for females), and serum creatinine to estimate creatinine clearance.
CPI Patient Assessment & Evaluation 3
According to CTCAE v5.0, a subject experiences alanine aminotransferase (ALT) elevation at 4 times the upper limit of normal (ULN) with no symptoms.
This represents which grade of adverse event?