ARCELL Sample Assessment Checklist For an initial research discussion only; not the formal acceptance SOP. Use de-identified codes. Do not include patient names, medical-record numbers or IDs. 1. Study overview Disease / research question: Design (paired, longitudinal, single time point, other): Approximate scope (distinguish cases, specimens and pairs): Existing data: 2. FFPE / Arc-well De-identified sample code: Tissue site and time point: Archival age: Fixation and storage history (unknown if applicable): Remaining tissue: Available pathology, tumor fraction and necrosis information: Primary-recurrence or pre/post-treatment pairing: Available de-identified treatment and follow-up information: 3. Fresh tissue / wellDR-seq Planned tissue type and source: Planned collection time: Preservation and transport proposal (confirm in advance): Matched pathology and controls: DNA-RNA relationship of interest: 4. Before execution Applicable ethics approval / authorization: De-identification, access rights and ownership: Acceptance criteria to confirm: Proposed QC and analytical scope: Do not ship until transport and acceptance conditions are agreed. Suitability requires actual assessment. Contact: research@arcell.bio