Good Clinical Practices (cGCP)

The Fundamentals of Recist 1.1

RECIST (Response Evaluation Criteria in Solid Tumors) is the gold-standard set of rules used in clinical trials to objectively measure how a patient’s cancer responds to treatment.

This eLearning course guides you through a standardized approach for providing an objective assessment of tumor burden to determine if a patient is improving, stable, or progressing during a clinical trial.

Course Code: ELM-349

Duration: 20 mins

Skill Level: Basic

Language: English

Final Exam: Yes

Certification: Yes

Version: V1.0

Effective Date: 03/30/2026

Curriculum for this course

Welcome

Anatomy of a Lesion

Measurability Rules

Baseline vs. Nadir

Calculating the Sum of Diameters

The 30% Rule

The 20% Rule

The Lymph Node Exception

New Lesions & Overrides

Best Response vs. Objective Response

Summary & Knowledge Check

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