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Comparison · NCT03255018-deaths

Cohort 1 Gray-Zone Lymphoma (GZL) vs Cohort 2 Extra-nodal Diffuse Large B-cell Lymphoma (DLBCL): deaths from any cause

Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.

2 sourcestrial-comparisons-2026-03-23-0.1.0

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ConductScience Library. Cohort 1 Gray-Zone Lymphoma (GZL) vs Cohort 2 Extra-nodal Diffuse Large B-cell Lymphoma (DLBCL): deaths from any cause. Trial comparisons, record NCT03255018-deaths. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03255018-deaths

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Measures6

Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.

MeasureValue95% interval, lower95% interval, upperMethodNote
Risk in group 1000.658wilson
Risk in group 20.5560.2670.811wilson
Risk difference, group 1 minus group 2-0.556-0.8110.163newcombe hybrid score
Risk ratio, group 1 over group 2loga group has no participants with the outcome
Odds ratio, group 1 over group 2loga cell of the two-by-two table is zero
Number needed to treat, for one fewer death from any cause on Cohort 1 Gray-Zone Lymphoma (GZL) than on Cohort 2 Extra-nodal Diffuse Large B-cell Lymphoma (DLBCL)1.8from the risk difference intervalthe interval includes no difference

Groups2

Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.

GroupTitleDescriptionWith the outcomeAnalysedClinicalTrials.gov code
Group 1Cohort 1 Gray-Zone Lymphoma (GZL)
Cohort 1: B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and classical Hodgkin lymphoma (i.e., Gray-zone lymphoma or GZL)~Participants will be treated with pembrolizumab 200 mg (flat dose) intravenous (IV) every 3 weeks provided they have clinical benefit and no unacceptable toxicity; participants who achieve a complete response (CR) will have the option to stop after 1 year of therapy.
02EG000
Group 2Cohort 2 Extra-nodal Diffuse Large B-cell Lymphoma (DLBCL)
Cohort 2: Extra-nodal diffuse large B-cell lymphoma involving one or more of the specified extra-nodal sites (i.e., extra-nodal DLBCL)~Participants will be treated with pembrolizumab 200 mg (flat dose) intravenous (IV) every 3 weeks provided they have clinical benefit and no unacceptable toxicity; participants who achieve a complete response (CR) will have the option to stop after 1 year of therapy.
59EG001

Harm

What it counts
Total, all-cause mortality
Time frame
Adverse events are collected from the first dose of therapy through 30 days past the last dose of study drug or start of new anti-cancer therapy., approximately 5 months and 7 days for cohort 1, and 44 months and 25 days for cohort 2.

Source ClinicalTrials.gov

Trial

Title
Pembrolizumab in Relapsed and Refractory Gray-Zone Lymphoma (GZL), Primary Central Nervous System Lymphoma (PCNSL), and Other Extranodal Diffuse Large B-cell Lymphomas
NCT number
NCT03255018
Phases
PHASE2
Conditions
Non-Hodgkin Lymphoma, Lymphoma, Diffuse Large B-Cell Lymphoma, Gray-zone Lymphoma, Primary Central Nervous System Lymphoma
Interventions
Pembrolizumab
Lead sponsor
National Cancer Institute (NCI)
Results first posted
2023-11-28

Source ClinicalTrials.gov

Source

Release
trial-comparisons-2026-03-23-0.1.0
Release manifest SHA-256
f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
AACT copy
2026-03-23
Tables read
outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet

Source ClinicalTrials.gov

Sources 2

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.

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