Effect of GTx-024 on Muscle Wasting in Patients With Non-Small Cell Lung Cancer (NSCLC) on First Line Platinum

This is a randomized, double blind, placebo controlled, multicenter, multinational efficacy
and safety study in subjects with non small cell lung cancer. Subjects will be evenly
randomized to placebo or GTx-024 prior to initiation of first line chemotherapy. The primary
efficacy analysis will be based on total Lean Body Mass (LBM) and physical function.

Inclusion Criteria:

- give voluntary, signed informed consent in accordance with institutional policies

- be non-obese as defined as body mass index (BMI)< or = 32 and weight < 300 pounds (<
136 kg)

- have been diagnosed with Stage III or IV NSCLC

- be prior to first line chemotherapy

- planned first line chemotherapy regimen is platinum plus gemcitabine only or platinum
plus vinorelbine only or platinum plus pemetrexed only

- if surgery is part of the cancer treatment, screening for this study should be
conducted at least 4 weeks (28 days) after surgery

- life expectancy of > 6 months

- ECOG score < or = 1

- serum creatinine < or = 2.0 mg/dL

- MALES - age > or = 30 years

- - FEMALES - age >or=30 years and clinically confirmed as postmenopausal.Subjects must
have undergone the onset of spontaneous or surgical menopause prior to the start of
this study. Spontaneous menopause is defined as the natural cessation of ovarian
function as indicated by being amenorrheic for at least 12 months. If the subject has
been amenorrheic for >or=6 months but <12 months they must have a serum FSH
concentration of >or=50 mIU/mL and an estradiol concentration of Surgical menopause is defined as bilateral oophorectomy.

- MALES - subjects must agree to use a double barrier method of contraception during the
study and for 3 months after study completion. This may include the following: condom
+ spermicide or condom + oral hormonal contraception

- MALES - have a serum PSA of < or = 4.0 ng/mL or a negative prostate biopsy (no
prostate cancer) within 6 months of evaluation

Exclusion Criteria:

- Have, in the judgment of the Investigator, a clinically significant concurrent illness
or psychological, familial, sociological, geographical or other concomitant condition
that would not permit adequate follow-up and compliance with the study protocol

- Have ALT/SGOT or AST/SGPT above 1.5 times the upper limit of normal (ULN) without
evidence of liver metastases and above 5 times the ULN in subjects with evidence of
liver metastases

- have alkaline phosphatase greater than 3 times ULN and/or total bilirubin levels above
2 mg/dL at baseline

- have biologic agents or kinase inhibitors as part of their first line chemotherapy
regimen including, but not limited to bevacizumab (Avastin), gefitinib (Nexavar) and
erlotinib (Tarceva)

- cardiovascular: uncontrolled hypertension, congestive heart failure or angina

- Pulmonary: Stage 4 chronic obstructive pulmonary disease (COPD)

- positive screen for Hepatitis B consisting of HBsAg (Hepatitis B Surface Antigen),
unless subject was diagnosed > 10 years prior to enrollment and no evidence of active
liver disease

- currently taking testosterone, oxandrolone (Oxandrin), testosterone-like agents (such
as dehydroepiandrosterone (DHEA), androstenedione, and other androgenic compounds
including herbals), or antiandrogens; previous therapy with testosterone and
testosterone-like agents is acceptable with a 30 day washout (if previous testosterone
therapy was long term depot within the past 6 months, the site should contact the
medical monitor for this study to determine appropriate washout period)

- currently taking megestrol acetate (Megace), dronabinol (Marinol), medical marijuana
(medical cannabis) or any prescription medication intended to increase appetite or
treat unintentional weight loss

- have a baseline stair climb time >or=30 seconds (mean of two stair climbs)

- have active cancer, other than NSCLC or non-melanoma carcinoma of the skin, within the
previous two years.