SAAS interface populated by patient’s ongoing cancer treatment experience so their doctor can decide what to do next. Shows the patient’s tests, results, diagnoses, biomarkers, and responses arranged on an interactive timeline
* Complex, evolving data* Non-negotiable user research * Experienced, time-constrained users* New product + evolving design system* Limited capacity for rework

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* Standardize structure before screens* Define states once, reuse everywhere* Encode decisions into the system* Reduce cognitive and operational rework

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* Enterprise design system (base)* Project extension layer (additive)* No forking, no overrides* Designed to be promotable or disposable