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What Do My Cytogenetic Test Results Mean?

This chart can help you know how your treatment is working. CML treatment results are based on the percentage of Philadelphia chromosomes detected during cytogenetic testing. If you don't have the percentage, enter the number of Philadelphia chromosomes detected in your test report (0 to 20) in the box and click Calculate. The corresponding percentage of Philadelphia chromosomes and treatment result will be highlighted in the chart below.

Number of Philadelphia chromosomes:

out of 20

This Percentage of Philadelphia Chromosomes...	...Means This Result
0%	Complete cytogenetic response (CCyR)	Major cytogenetic response (MCyR) combines both CCyR and PCyR
1% to 35%	Partial cytogenetic response (PCyR)
36% to 65%	Minor cytogenetic response
66% to 95%	Minimal cytogenetic response
Greater than 95%	No cytogenetic response

Record your test results in the Treatment Milestones Tracker

In people newly diagnosed with CML, key milestones are achieving an MCyR 12 months after starting treatment and a CCyR 18 months after starting treatment
Cytogenetic test results can help your doctor understand how you may respond to treatment over time

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