{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","lowerLimit":"19.2","upperLimit":"39.5","value":"28.6"},{"groupId":"OG001","lowerLimit":"0.1","upperLimit":"17.2","value":"3.3"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"84"},{"groupId":"OG001","value":"30"}],"units":"Participants"}],"description":"ORR per BICR by 12 Weeks was defined as the percentage of participants with CR or PR by 12 weeks of treatment, and before time of crossover (Cohort C), whichever came earlier. CR was defined as the disappearance of all target lesions and each target lymph node must have reduction in short axis to more than \\<1.0 cm. PR was defined as at least a 30% decrease in post-baseline sum of the diameters (sum of the longest diameter for all target lesions plus the sum of the short axis of all the target lymph nodes at current evaluation) taking as reference the baseline sum of diameter.","dispersionType":"95% Confidence Interval","groups":[{"description":"Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Trastuzumab 8 mg/kg by IV infusion on Day 1 of Cycle 1 and 6 mg/kg on Day 1 of each subsequent cycle until PD, death, withdrawal of consent, study closure, or alternative therapy.","id":"OG000","title":"Tucatinib+Trastuzumab (Cohorts A+B)"},{"description":"Participants received Tucatinib 300 mg PO BID on Days 1 to 21 of each 21-day cycle. Participants who did not respond to monotherapy were given the option to receive tucatinib and trastuzumab based on radiographic progression (as determined by investigator assessment using RECIST v1.1), or if they had not achieved a PR or CR by the week 12 assessment.","id":"OG001","title":"Tucatinib Pre-Crossover (Cohort C)"}],"paramType":"NUMBER","populationDescription":"The Full Analysis Set included all participants who were enrolled and received any amount of study treatment and had HER2+ tumors as defined by one or more protocol required local tests. Data for cohort A and B was combined as prespecified in SAP.","reportingStatus":"POSTED","timeFrame":"Up to 3 months","title":"ORR by 12 Weeks of Treatment Per RECIST v1.1 According to BICR Assessment","type":"SECONDARY","unitOfMeasure":"Percentage of Participants"}