Derivation Web

source_b32324ea32dd458a

**Selected angle:** `boundary_condition`

## One-sentence thesis

Of the patients with PCNSL, 56% achieved a complete remission (CR) with 37% remaining in remission at 6 months. Boundary receipts add a second constraint: Median OS ranged from 5.5 to 11.1 months across the studies.


**Interpretation note:** This is a hypothesis-generating alpha memo, not confirmatory evidence; subgroup or context-…