Oral HYCAMTIN Plus Whole Brain Radiation Therapy In Treatment Of Brain Metastases Resulting From Non-Small Lung Cancer

Overall survival is defined as the time from randomization until the date of death due to any cause. The date of last contact was used for those participants who had not died or were lost to follow-up. These participants were classified as having been censored.

Six-month survival is defined as the percentage of participants alive at 6 months following randomization. The date of last contact was used for those participants who had not died or were lost to follow-up. These participants were classified as having been censored.

The number of participants achieving either a CR or PR, per World Health Organization (WHO) Criteria, in the CNS was assessed. CR is defined as the complete disappearance of all known measurable (Must be accurately measured in >=1 dimension) and nonmeasurable disease, without clinical, laboratory, or radiological evidence of recurrence for at least 4 weeks. CR may have been defined in participants with measurable and/or non-measurable disease at Screening. PR is defined as at least a 50% decrease in the sum of the products of the greatest length and perpendicular width of all measurable disease with no clear increase in nonmeasurable disease in participants without measurable disease. In both cases, there must have been no appearance of new disease, and no clinical, laboratory, or radiological evidence of disease progression for at least 4 weeks. Assessment of response was performed by the investigator and was based on unconfirmed responses.

TTR is defined as the time from Randomization until the first documented evidence of CR or PR in the CNS. CR is defined as the complete disappearance of all known measurable (Must be accurately measured in >=1 dimension) and nonmeasurable disease, without clinical, laboratory, or radiological evidence of recurrence for at least 4 weeks. CR may have been defined in participants with measurable and/or non-measurable disease at Screening. PR is defined as at least a 50% decrease in the sum of the products of the greatest length and perpendicular width of all measurable disease with no clear increase in nonmeasurable disease in participants without measurable disease. In both cases, there must have been no appearance of new disease, and no clinical, laboratory, or radiological evidence of disease progression for at least 4 weeks. Assessment of response was performed by the investigator and was based on unconfirmed responses.

TTP is defined as the time from Randomization until the first documented sign of disease progression in the CNS. Progressive disease (PD) is defined as an increase >=25% in any measurable lesion or, in participants with non-measurable disease only, an estimation of an increase >=25%. In both cases, determination of progression included the appearance of any new lesions, or signification worsening of conditions presumed to be related to malignancy. Participants with clinical or laboratory evidence of possible disease progression were to be evaluated radiologically. TTP was analyzed with censoring for extended loss to follow-up to account for two or more missed assessments before a TTP event. The date of the last adequate CNS assessment before extended loss to follow-up was used for censored participants.

TTP is defined as the time from Randomization until the first documented sign of disease progression in all sites of disease. Progressive disease (PD) is defined as an increase >=25% in any measurable lesion or, in participants with non-measurable disease only, an estimation of an increase >=25%. In both cases, determination of progression included the appearance of any new lesions, or signification worsening of conditions presumed to be related to malignancy. Participants with clinical or laboratory evidence of possible disease progression were to be evaluated radiologically. TTP was analyzed with censoring for extended loss to follow-up to account for two or more missed assessments before a TTP event. The date of the last adequate CNS assessment before extended loss to follow-up was used for censored participants.

Neurological signs and symptoms data were derived from a participant-reported diary. The participants were asked to assess the following signs and symptoms on a scale of none, mild, moderate, or severe at Months 1 and 3: headache, problems with balance/coordination (PB/C), leg weakness, arm weakness, loss of feeling/numbness (LofF/N), speech difficulty (SD), confusion, loss of memory (LofM), drowsiness, nausea, vomiting, dizziness, visual problems (VP), seizures, leg/ankle swelling (L/AS), heart burn, difficulty sleeping (DS), tiredness, and appetite/weight gain (A/WG).

The investigator assessed participants for the neurological sign and symptom of level of consciousness and assigned each participant to one of the following categories: normal; somnolence or sedation not interfering with function (not intefering); somnolence or sedation interfering with function, but not activities of daily living (ADLs) (interfering); obtundation or stupor, difficult to arouse, inteferring with ADLs (obtundation or stupor); coma.

The investigator (per Common Terminology Criteria for Adverse Events [CTCAE], version 3.0) assessed participants for headache and assigned each participant to one of the following categories: absent, Grade (G) 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for dizziness/lightheadedness and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for vertigo and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for nausea/vomiting and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for visual problem and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for seizure and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator (per CTCAE, version 3.0) assessed participants for other neurological symptoms and assigned each participant to one of the following categories: absent, G 1, G 2, G 3, G 4, and G 5. Grade refers to the severity of the AE. The CTCAE displays G 1 through 5 with unique clinical descriptions of severity for each AE based on this general guideline: G 1: mild, asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; G 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental ADL; G 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated, disabling, limiting self care ADL; G 4: life-threatening consequences, urgent intervention indicated; G 5: death related to AE.

The investigator assessed participants' status of cranial nerves II-XII and assigned each participant to one of the following categories: normal; present, not interfering with ADLs; present, interfering with ADLs; life threatening, disabling.

The investigator assessed participants' status of language (dysphasia or aphasia) and assigned each participant to one of the following categories: absent; awareness of receptive or expressive aphasia, not impairing ability to communicate (not impaired); receptive or expressive dysphasia, impairing ability to communicate (impaired); inability to communicate (unable).

The investigator assessed participants' status of strength (right upper extremity) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic with weakness on physical examination; Grade 2, symptomatic and interfering with function, but not interfering with ADLs; Grade 3, symptomatic and interfering with ADLs; Grade 4: bedridden or disabling.

The investigator assessed participants' status of strength (left upper extremity) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic with weakness on physical examination; Grade 2, symptomatic and interfering with function, but not interfering with ADLs; Grade 3, symptomatic and interfering with ADLs; Grade 4: bedridden or disabling.

The investigator assessed participants' status of strength (right lower extremity) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic with weakness on physical examination; Grade 2, symptomatic and interfering with function, but not interfering with ADLs; Grade 3, symptomatic and interfering with ADLs; Grade 4: bedridden or disabling.

The investigator assessed participants' status of strength (left lower extremity) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic with weakness on physical examination; Grade 2, symptomatic and interfering with function, but not interfering with ADLs; Grade 3, symptomatic and interfering with ADLs; Grade 4: bedridden or disabling.

The investigator assessed participants' status of sensation and assigned each participant to one of the following categories: normal; loss of deep tendon reflexes or paresthesia, but not interfering with function (not interfering with function); objective sensory loss or paresthesia interfering with function, but not interfering with ADLs (interfering with function); sensory loss or paresthesia interfering with ADLs (intefering with ADLs); permanent sensory loss that interferes with function (permanent sensory loss).

The investigator assessed participants' status of ataxia (right upper extremity: finger to nose testing) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic but abnormal on physical examination, and not interfering with function; Grade 2, mild symptoms interfering with function, but not interfering with ADLs; Grade 3, moderate symptoms interfering with ADLs; Grade 4, bedridden or disabling.

The investigator assessed participants' status of ataxia (left upper extremity: finger to nose testing) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic but abnormal on physical examination, and not interfering with function; Grade 2, mild symptoms interfering with function, but not interfering with ADLs; Grade 3, moderate symptoms interfering with ADLs; Grade 4, bedridden or disabling.

The investigator assessed participants' status of ataxia (gait) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic but abnormal on physical examination, and not interfering with function; Grade 2, mild symptoms interfering with function, but not interfering with ADLs; Grade 3, moderate symptoms interfering with ADLs; Grade 4, bedridden or disabling.

The investigator assessed participants' status of ataxia (balance) and assigned each participant to one of the following categories: normal; Grade 1, asymptomatic but abnormal on physical examination, and not interfering with function; Grade 2, mild symptoms interfering with function, but not interfering with ADLs; Grade 3, moderate symptoms interfering with ADLs; Grade 4, bedridden or disabling.

An AE is defined as any untoward medical occurrence in a patient or clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose: results in death; is life threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect. For a list of all SAEs and AEs, see the SAE/AE module of this results summary.

The worst-case change from Baseline in chemistry parameters was measured as decrease to low (DTL), change to normal or no change (CTN/NC), or increase to high (ITH). The worst-case change value could have been measured at any point during the on-therapy period. Participants are counted twice if the participant "Decreased to Low" and "Increased to High" during the on-therapy period.

Lesions were assessed per WHO criteria. For lesion assessment data, see the outcome measure entitled "Number of participants with a complete response (CR) or a partial response (PR) (central nervous system [CNS]-radiologic)."

Brain symptoms were assessed as the number of participants with neurological signs and symptoms. For brain symptom data, see the outcome measures entitled "Number of participants with the indicated investigator assessment for the neurological sign and symptom of X at Baseline, Month 1, and Month 3."

Disease-related events were measured as the number of participants who died or progressed. Progressive disease (PD) is defined as an increase >=25% in any measurable lesion or, in participants with non-measurable disease only, an estimation of an increase >=25%. In both cases, determination of progression included the appearance of any new lesions, or signification worsening of conditions presumed to be related to malignancy. Participants with clinical or laboratory evidence of possible disease progression were to be evaluated radiologically. Data were analyzed with censoring for extended loss to follow-up to account for two or more missed assessments before an event. The date of the last adequate CNS assessment before extended loss to follow-up was used for censored participants.