A Study Evaluating the Impact of Venetoclax on the Quality of Life for Subjects With Relapsed (Your Cancer Has Come Back) or Refractory (no Response to Previous Cancer Treatments) Chronic Lymphocytic Leukemia (CLL) While Receiving Venetoclax Monotherapy (a Single Agent).

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a global health status/quality of life (GHS/QoL) scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the global health status/quality of life scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a physical functioning scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the physical functioning scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a role functioning scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the role functioning scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including an emotional functioning scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the emotional functioning scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a cognitive functioning scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the cognitive functioning scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a social functioning scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the social functioning scale indicates a better level of functioning, and positive changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a fatigue scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the fatigue scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a nausea and vomiting scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the nausea and vomiting scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a pain scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the pain scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a dyspnea scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the dyspnea scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including an insomnia scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the insomnia scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including an appetite loss scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the appetite loss scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a constipation scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the constipation scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a diarrhea scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the diarrhea scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-C30 is a 30-item participant self-report questionnaire composed of both multi-item and single scales, including a financial difficulties scale. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the financial difficulties scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the fatigue scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the treatment side effects scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the disease effects scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the infection scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the social problems scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

EORTC QLQ-CLL16 is comprised of 16 questions that address 5 domains of health-related quality of life important in CLL. Participants rate items and a score ranging from 0 to 100 is calculated. A higher score on the future health scale indicates a lower level of functioning, and negative changes from baseline indicate improvement. A change of 5 - 10 points is considered a small change, and a change of 10 - 20 points is considered a moderate change.

The EQ-5D 5L measures quality of life in five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each of which are rated on five levels of severity (1: no problems, 2: slight problems, 3: moderate problems, 4: severe problems, 5: extreme problems), and a separate visual analog scale (VAS). Participants rated their health on a vertical visual analogue scale, where the endpoints were labelled 100, "The best health you can imagine" and 0, "The worst health you can imagine". Positive values indicate improvement from baseline.

The EQ-5D 5L measures quality of life in five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each of which are rated on five levels of severity (1: no problems, 2: slight problems, 3: moderate problems, 4: severe problems, 5: extreme problems), and a separate visual analog scale (VAS). The scores for the 5 dimensions are used to compute a single utility index score ranging from zero (0.0) to 1 (1.0) representing the general health status of the individual, with '0' defined as a health state equivalent to being dead and '1' is full health. The higher the score the better the health status. Positive values indicate improvement from baseline.

Complete remission rate (CR + CRi) is defined as the percentage of participants achieving a CR or CRi as their best response (per the investigator assessment) based on 2008 Modified International Workshop on Chronic Lymphocytic Leukemia (IWCLL) National Cancer Institute-Working Group (NCI-WG) Guidelines criteria.

ORR is defined as the percentage of participants who achieved complete remission (CR), complete remission with incomplete marrow recovery (CRi), nodular partial remission (nPR), or confirmed partial remission (PR) based on the 2008 Modified International Workshop on Chronic Lymphocytic Leukemia (IWCLL) National Cancer Institute-Working Group (NCI-WG) Guidelines criteria as assessed by investigator using the best response at any time during the study.

DoR is defined as the number of days from the date of first response (complete remission (CR), complete remission with incomplete marrow recovery (CRi), nodular partial remission (nPR), or confirmed partial remission (PR) based on the 2008 Modified International Workshop on Chronic Lymphocytic Leukemia (IWCLL) National Cancer Institute-Working Group (NCI-WG) Guidelines criteria to the earliest date of progressive disease (PD) or death. DOR was analyzed by Kaplan-Meier (K-M) methodology.

TTP is defined as the number of days from the date of first dose of venetoclax to the date of earliest disease progression (PD). TTP was analyzed by Kaplan-Meier (K-M) methodology.

PFS is defined as the number of days from the date of first dose of venetoclax to the date of earliest disease progression (PD) or death. PFS was analyzed by Kaplan-Meier methodology.

OS is defined as the number of days from the date of first dose of venetoclax to the date of death. For participants who did not die, their data was censored at the date of last study visit or the last known date to be alive, whichever was later. OS was estimated using Kaplan-Meier methodology.