Clinical characteristics of the CLL patients (n = 30).

<p>*for definition, see ref <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067601#pone.0067601-Hallek1" target="_blank">[10]</a>.</p><p>**test performed at relapse/progression prior to initiation of salvage therapy.</p><p>***Among 20 untreated patients, 11 were indolent and 9 were progressive/symptomatic but tested prior to first-line therapy.