Inclusion Criteria:

          -  Ability to understand the purpose and risks of the study and provide signed and dated
             informed consent and authorization to use protected health information (PHI) in
             accordance with national and local subject privacy regulations

          -  Histologically- or cytologically-confirmed stage IV non-squamous, NSCLC who have
             progressed after at least one prior line of treatment; in the expansion phase,
             participants are only eligible if their molecular category has not been fully enrolled
             (10 participants with epidermal growth factor receptor (EGFR) mutations, 5
             participants with anaplastic lymphoma receptor tyrosine kinase (ALK) gene
             rearrangement, 5 participants with wild type v-Ki-ras2 Kirsten rat sarcoma viral
             oncogene homolog (KRAS), EGFR and ALK)

          -  At least one measurable lesion as defined by modified RECIST version 1.1; previously
             irradiated lesions are not measurable unless the lesion is new or has demonstrated
             clear progression after radiation

          -  Last chemotherapy or treatment with another systemic anti-cancer agent must have
             stopped >= 4 weeks prior to enrollment (or >= 5 half-lives for oral tyrosine-kinase
             inhibitors or 2 weeks for palliative radiotherapy); participants must have recovered
             (Common Terminology Criteria for Adverse Events [CTCAE] =< 1 or baseline) from acute
             toxicities of any previous therapy (with the exception of alopecia)

          -  Eastern Cooperative Oncology Group (ECOG) performance status =< 2

          -  Expected survival time of >= 3 months in the opinion of the investigator

          -  Absolute neutrophil count (ANC) >=1.5 x 10^9/L

          -  Hemoglobin (Hgb) >= 9 g/dl

          -  Platelets (plt) >= 100 x 10^9/L

          -  Potassium within normal limits

          -  Total calcium (corrected for serum albumin) within normal limits or corrected with
             supplements

          -  Magnesium within lower limits or corrected with supplements

          -  Phosphorus within lower limits or corrected with supplements

          -  Aspartate aminotransferase (AST)/serum glutamic oxaloacetic transaminase (SGOT) and
             alanine aminotransferase (ALT)/serum glutamate pyruvate transaminase (SGPT) =< 1.5 x
             upper limit of normal (ULN)

          -  AST/SGOT and ALT/SGPT =< 2.5 x upper limit of normal (ULN) if liver metastases are
             present

          -  Serum bilirubin =< 1.5 x ULN

          -  Serum creatinine =< 1.5 x ULN or 24-hour clearance >= 50 ml/min

          -  Negative serum or urine pregnancy test; the serum pregnancy test must be obtained
             prior to the first administration of AUY922 (=< 14 days prior to dosing) in all
             pre-menopausal women and women < 2 years after the onset of menopause

          -  Ability to provide a formalin-fixed, paraffin-embedded (FFPE) tumor tissue sample
             containing representative tumor tissue from a previously obtained biopsy/resection
             that meets specific tissue sample requirements at screening

        Exclusion Criteria:

          -  Unresolved diarrhea >= CTCAE (v4.0) grade 1

          -  Pregnant or lactating women

          -  Fertile women of childbearing potential (WCBP) not using (or refusing to use) adequate
             methods of contraception as agreed on between her and the consenting investigator;
             male participants not using (or refusing to use) a condom during intercourse

          -  History of another primary cancer within 3 years prior to enrollment with the
             exception of curatively treated skin cancer (other than melanoma) or curatively
             treated cervical carcinoma in-situ

          -  History of central nervous system (CNS) metastasis; Note: participants without
             clinical signs and symptoms of CNS involvement are not required to have magnetic
             resonance imaging (MRI) of the brain; (exception: participants with treated brain
             metastases who are asymptomatic, not currently on steroid therapy, and clinically
             stable for >= 2 weeks will be eligible for protocol participation)

          -  Prior treatment with pemetrexed

          -  Prior anti-neoplastic treatment with any heat shock protein 90 (HSP90) or histone
             deacetylase (HDAC) inhibitor compound

          -  Participants who have undergone any major surgery =< 2 weeks prior to starting study
             drug or who have not recovered from side effects of such therapy

          -  Last chemotherapy or treatment with another systemic anti-cancer agent must have
             stopped >= 4 weeks prior to enrollment (or >= 5 half-lives for oral tyrosine-kinase
             inhibitors); participants with EGFR mutations and ALK gene rearrangement who have not
             received a tyrosine kinase inhibitor targeting their molecular abnormality (e.g.,
             erlotinib or crizotinib respectively); participants must have recovered (CTCAE =< 1)
             from acute toxicities of any previous therapy (with the exception of alopecia)

          -  Participants who have concurrent or uncontrolled illness that the investigator feels
             will impede study participation including, but not limited to:

               -  Acute or chronic liver disease

               -  Acute or chronic renal disease

               -  Active or ongoing infection

               -  Psychiatric illness/social situations that would limit compliance with study
                  requirements

          -  Participants with known disorders due to a deficiency in bilirubin glucuronidation
             (e.g. Gilbert's syndrome)

          -  Intolerance of Vitamin B12, folic acid or dexamethasone

          -  Participants with following cardiac criteria:

               -  History of long QT syndrome

               -  QTcF >= 450 ms during screening electrocardiogram (ECG)

               -  History of clinically manifest ischemic heart disease including myocardial
                  infarction, stable or unstable angina pectoris, coronary arteriography or cardiac
                  stress testing/imaging with findings consistent with infarction or clinically
                  significant coronary occlusion ≤ 6 months prior to study start

               -  History of heart failure or left ventricular (LV) dysfunction (LV ejection
                  fraction [EF] =< 45%) by multi gated acquisition scan (MUGA) or echocardiogram
                  (ECHO)

               -  Clinically significant ECG abnormalities including one or more of the following:
                  left bundle branch block (LBBB), right bundle branch block (RBBB) with left
                  anterior hemiblock (LAHB); ST segment elevations or depressions > 1mm, or 2nd
                  (Mobitz II) or 3rd degree atrioventricular block (AV) block

               -  History and presence of atrial fibrillation, atrial flutter or ventricular
                  arrhythmias including ventricular tachycardia or Torsades de pointes

               -  Other clinically significant heart disease (e.g. congestive heart failure,
                  uncontrolled hypertension, history of labile hypertension, or history of poor
                  compliance with a hypertensive regimen)

               -  Clinically significant resting bradycardia (< 50 beats per minute)

               -  Participants who are currently receiving treatment with any medication which has
                  a relative risk or prolonging the QTcF interval or inducing Torsades de pointes
                  (as listed in protocol) and cannot be switched or discontinued to an alternative
                  drug prior to commencing AUY922 dosing

               -  Participants who are on a cardiac pacemaker

          -  Participants unwilling or unable to comply with the protocol

          -  Participants known to be human immunodeficiency virus (HIV) positive; testing is not
             required in the absence of clinical signs and symptoms suggesting HIV infection

          -  Any systemic anti-cancer treatment out of allowed timelines

          -  Concurrent cytotoxic or immunosuppressive therapy for non-malignant disease (e.g., for
             rheumatoid arthritis or lupus)