{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"0"},{"groupId":"OG002","value":"1"},{"groupId":"OG003","value":"0"},{"groupId":"OG004","value":"2"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"3"},{"groupId":"OG001","value":"3"},{"groupId":"OG002","value":"6"},{"groupId":"OG003","value":"3"},{"groupId":"OG004","value":"7"},{"groupId":"OG005","value":"0"}],"units":"Participants"}],"description":"DLT was defined as any of the protocol specified TEAEs that occurred during the 21-day. DLT treatment/observation period (including the pre-dose tests on Day 22/Week 4 Day 1) and that were considered at least possibly related to study treatment by the investigator. Protocol specified DLT TEAE criteria: Grade 4 thrombocytopenia; Grade 3 thrombocytopenia with bleeding (with the exception of brief, easily-controlled epistaxis, mild gum bleeding or normal menses) or with any requirement for platelet transfusions; Grade 4 anemia, unexplained by underlying disease; Grade 4 neutropenia lasting more than 5 days; Febrile neutropenia of any duration (ANC \\< 1.0 x 109/L, fever \\> 38.5°C); Grade 3 or higher non-hematologic toxicity except for alopecia and nausea controlled by medical management; Grade 3 or 4 hemorrhage.","groups":[{"description":"Participants with relapsed or refractory CTCL received TTI-621 0.5 mg/kg infusion once weekly until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG000","title":"Part 4: Ontorpacept (PF-07901800/TTI-621) 0.5 mg/kg"},{"description":"Participants with relapsed or refractory CTCL received TTI-621 0.7 mg/kg infusion once weekly until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG001","title":"Part 4: Ontorpacept (PF-07901800/TTI-621) 0.7 mg/kg"},{"description":"Participants with relapsed or refractory CTCL received TTI-621 1.0 mg/kg infusion once weekly until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG002","title":"Part 4: Ontorpacept (PF-07901800/TTI-621) 1.0 mg/kg"},{"description":"Participants with relapsed or refractory CTCL received TTI-621 1.4 mg/kg infusion once weekly until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG003","title":"Part 4: Ontorpacept (PF-07901800/TTI-621) 1.4 mg/kg"},{"description":"Participants with relapsed or refractory CTCL received TTI-621 2 mg/kg infusion once weekly until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG004","title":"Part 4: TTI-621 2 mg/kg"},{"description":"Participants with relapsed or refractory CTCL received a 2.0 mg/kg TTI-621 infusion once every 2 weeks until disease progression, unacceptable toxicity, or other reasons for treatment discontinuation occurred.","id":"OG005","title":"Part 4: Ontorpacept (PF-07901800/TTI-621) Q2W / 2.0 mg/kg"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"The DLT-evaluable set included participants who had received all 3 doses within the DLT evaluation period, OR participants who experienced an AE, meeting DLT criteria during that time. As 2.0mg/kg Q2W cohort was not a part of escalation for dose optimization, and not relevant to DLT assessment hence this outcome measure was not analyzed for Q2W arm. Here, \"Number of Participants Analyzed\" refers to participants evaluable for this outcome measure.","reportingStatus":"POSTED","timeFrame":"Part 4: Day 1 of dosing up to Pre-dose on Day 22","title":"Part 4: Number of Participants With Dose Limiting Toxicities (DLTs)","type":"PRIMARY","unitOfMeasure":"Participants"}