Child-Pugh score A within 14 days prior to study entry Patient with a Child-Pugh score B or C Child-Pugh Score 5 or 6 Child-Pugh score A Patient with a Child-Pugh score B or C Child-Pugh score A or B7 Patients with chronic liver disease with a Child-Pugh score B or C Severe liver dysfunction (Child-Pugh Class B or C) is not present; and Child Pugh score A5, A6, B7 or B8 Child Pugh score B9 or C10 Child-Pugh Score class A Child-Pugh class A Patient with a Child-Pugh score B or C Child-Pugh score of A Patient with a Child-Pugh score B or C Child Pugh B or C stage liver disease Child Pugh B or C disease Patients with liver disease classified as Child Pugh class A or B, with score =< 9 COHORT B, GROUP 6: HEPATOCELLULAR CARCINOMA: Child-Pugh score > 7 Documented Child-Pugh score of B or C for hepatocellular carcinoma patients with known underlying liver dysfunction Chronic liver disease, Child-Pugh class B or C Child-Pugh score A Child-Pugh score of A. A score of B7 is allowed without severe ascites or without hepatic encephalopathy. Child Pugh A score 5 or 6 liver function Impaired liver function Child-Pugh class B or C (score 7-15). Subjects must have a Child-Turcotte-Pugh (CTP) score =< 7 to be eligible Child-Pugh class B and C liver failure Child-Pugh score of A Subjects with severe hepatic insufficiency Child-Pugh score > 6 Child-Pugh scores 5-7 Obtained with 21 days of registration: Child Pugh class A (5-6 points) or B (7 points) Child Pugh class B (8,9) and class C are excluded. Child-Pugh class-A liver function Patients with Child Pugh B or C liver failure will be excluded Subject with a Child-Pugh score B or C. Patient with a Child-Pugh score B or C Child-Pugh class A or B7 liver function Obtained =< 14 days prior to registration: If baseline liver disease, Child Pugh score not exceeding class A Child-Pugh A or B7 Have a Child-Pugh A liver score within 7 days of first dose of study drug Child-Pugh cirrhotic status A or B with a score of 7 Child Pugh class B & C Patients with severe chronic liver disease (Child-Pugh score > 10) Child-Pugh score 8 or greater Patient with a Child-Pugh score B or C Several hepatic impairments, define as Child-Pugh Class C or worse Child-Pugh class A or B7 without ascites Child-Pugh score of A Child-Pugh score must be A to B7. Must have Child-Pugh A or B liver disease Child-Pugh C liver function Subject has hepatic decompensation (Child-Pugh score > 6 [class B and C]) The Child Pugh score must be 5 or 6 (Child Pugh class A) Patients with Child-Pugh A and Child-Pugh B7 (if due to low albumin but not elevated international normalized ratio [INR] or bilirubin) cirrhosis are allowed; Child-Pugh Turcot (CPT) Classification System score will be based upon INR, total bilirubin and serum albumin, as well as the presence/absence of ascites and hepatic encephalopathy Child-Pugh B (except Child-Pugh B7 due to low albumin) or Child-Pugh C cirrhosis Child Pugh score A or B Child-Pugh status C Child-Pugh Class A without either current encephalopathy or ascites. Child-Turcotte-Pugh Classification A or B Child-Pugh Class A Cirrhotic status of Child-Pugh class A or B Child-Pugh score A Adequate hepatic function for squamous cell NSCLC patients, as defined per protocol. For HCC patients: Child-Pugh score ?6 and Model for End-Stage Liver Disease (MELD) score?15 Adequate hepatic function for squamous cell NSCLC patients, as defined per protocol. For HCC patients: Child-Pugh score ?6 and Model for End-Stage Liver Disease (MELD) score?15 Liver disease with Child-Pugh class B or C liver dysfunction Has hepatic decompensation (Child-Pugh score > 6; = class B and C) HCC patients only: Child Pugh class A or B7 liver disease Must have Child-Turcotte-Pugh (CTP) A or B7 Patient with severe liver impairment (Child Pugh score B/C) ARM B: Child Pugh Score A Subjects with known hepatic insufficiency (i.e. Child-Pugh score A [mild], Child-Pugh score B [moderate] or Child-Pugh score C [severe]) according to Child-Pugh criteria Patient with a Child-Pugh score B or C Subject is classified into Child-Pugh class C Child-Pugh score of A or B with =< 7 points and meeting laboratory eligibility for all parameters Has a Child-Pugh Class A liver score within 7 days of first dose of study drug. Child-Pugh Score of A. Patients with Child pugh score B or C Patients with Child-Pugh A-C liver disease Subject is classified into Child-Pugh class C Subject has Child-Pugh score of ?6, i.e., Child-Pugh A (Appendix 2); Patient with a Child-Pugh score B or C Child-Pugh Class A Dose Escalation Phase: Child-Pugh score of 7 points or less. Cohort 5: Child-Pugh Class B (B7-B8). For all other cohorts Child-Pugh score of 6 points or less Patients with hepatocellular carcinoma may be eligible provided they have total bilirubin ? 3.0 x ULN and are considered Child-Pugh Class A or Child-Pugh Class B7 (Child-Pugh Class B with a total Child-Pugh score not to exceed 7). Child Pugh score ? 7 points Has a Child-Pugh Class A liver score within 7 days of first dose of study drug Child-Pugh score A Patients with liver disease Child Pugh classification B and C. Child-Pugh score of 10-15 (Class C) Patient with Child-Pugh score B or C Preserved liver function (Child-Pugh class A or B) Child Pugh score =< 10 Subject has hepatic function status of Child Pugh Class A at Screening. Subject has status of Child-Pugh Class B or C at Screening. Child Pugh B and C Child-Pugh class A Child-Pugh score =< 7 (Child A-B) Child-Pugh liver function class A Child Pugh score =< 10 Child-Pugh Stage: A or B7 for Parts A & B, A for Part C, and D Child-Pugh Class A or B. Subject has Child-Pugh score of less than 7 (ie, class A or better) with neither encephalopathy nor clinically significant ascites (ascites requiring paracentesis within 3 months of signing the ICF is excluded). Child-Pugh status is calculated based on clinical findings and laboratory results during the screening period. Serum albumin of at least 2.8 g/dL Note: Laboratories in combination must still be Child Pugh score less than 7 Other laboratory parameters: Decompensated liver disease (Child-Pugh score > 6) or active or past auto-immune hepatitis Child Pugh Class A disease Child Pugh A For patients with hepatocellular carcinoma only, Child-Pugh Class A (score 5-6) disease. Score for hepatic encephalopathy must be 1; the score for ascites must be no greater than 2 and clinically irrelevant; for the determination of the Child-Pugh Class. Child-Pugh class A with no clinically apparent ascites Child-Pugh class of A Child-Pugh Class B and C. Hepatic function with a score of < 7 points according to the Child-Pugh System Subjects with impaired hepatic function will be grouped according to Child-Pugh classification score Child Pugh Class A liver function score Cirrhotic status of Child-Pugh grade A. Child-Pugh status should be determined based on clinical findings and laboratory data during the screening period (Appendix B). Subjects on anti-coagulants are to receive 1 point for their INR status, as they are presumed to have a <1.7 baseline PT/INR. Child-Pugh Classification A (see Appendix D) Child-Pugh Score A (5-6) Child-Pugh B-C cirrhotic status based on clinical findings and laboratory results Must be Child-Pugh class A a. Patients with uncontrolled massive ascites or presence of hepatic encephalopathy are excluded Significant liver dysfunction determined as Child-Pugh score B or C Child Pugh class A or B7 liver disease ECOG PS 0 or 1; Child-Pugh Cirrhotic Status A or B with a score of 7; Child-Pugh Class A. Child-Pugh Class A in the absence of hepatoencephalopathy or clinically evident ascites Hepatic function with a score of 7-9 points according to the Child-Pugh System Child Pugh class A liver function or class B7 Patients with Child Pugh liver function worse than B7 Subjects with severe hepatic insufficiency (Child Pugh score > 9) Severe liver impairment (Child-Pugh score > 9) Child-Pugh Score of up to B7 Child-Pugh score of up to B7 Child-Pugh score A Child-Pugh category A Child-Pugh score <7 (Child-Pugh Class A). Child-Pugh class B and C liver failure Child Pugh A or B Child-Pugh A/B Child-Pugh liver function Class B or C. Child-Pugh score ? 6