partial response


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partial response

the condition in which the maximum decrease in treated tumor volume is at least 50% but less than 100%.

partial response

Abbreviation: PR
In cancer care, a reduction in the size of readily identifiable tumors by 50% or more.
See also: response
References in periodicals archive ?
An overall response rate of 32% (12/38) was reported, with three complete responses (8%), nine partial responses (24%) and 22 patients with stable disease (58%).
An overall response rate of 31% (13/42) was reported, with 3 complete responses (7%), 10 partial responses (24%) and 10 patients with stable disease (24%).
Three of these individuals exhibited a complete response to therapy, 13 exhibited partial responses (tumor shrinkage greater than 50 percent) and six experienced minor responses (tumor shrinkage greater than 25 percent but less than 50 percent).
Of these 11 patients, seven experienced partial responses to therapy (tumor shrinkage greater than 50%), and four experienced minor responses (tumor shrinkage greater than 25%, but less than 50%).
To date, 6% of patients (4/67) evaluable for response had documented complete responses and 55% of patients (37/67) had documented partial responses.
Three patients (11%) with Sezary syndrome achieved a complete response and partial responses were observed in seven patients (26%).
Data from these phase II clinical trials in systemic anaplastic large cell lymphoma (ALCL) and cutaneous ALCL demonstrate that SGN-30 is well tolerated and has antitumor activity, including complete and partial responses.

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