Phase 2 Study With Abraxane (Nab®Paclitaxel) in Metastatic Colorectal Cancer

The purpose of this study is to evaluate the safety and efficacy of Abraxane (nab-paclitaxel) in subjects with previously treated metastatic colorectal cancer. Subjects will be placed into two separate cohorts based on their RAS mutation status.

Inclusion Criteria: - 1. Subject is ≥ 18 years old at the time of signing the Informed Consent Form 2. Subject has histological or cytological diagnosis of adenocarcinoma of the colon or rectum, with evidence of metastasis 3. Subject has a known KRAS mutation status (mutated or wild-type). NRAS mutation status may be unknown. 4. Subject has documented disease progression ≤ 2 months after the last administration of the last standard therapy. a. Subjects treated with oxaliplatin in the adjuvant setting, should have progressed during or within 6 months of completion of adjuvant therapy 5. Subject has either received prior treatment or was not a candidate for prior treatment, with fluoropyrimidine, oxaliplatin, irinotecan and an anti-VEGF therapy (e.g. bevacizumab or ziv-aflibercept); and if RAS wild-type tumors, an anti-EGFR therapy (e.g. cetuximab or panitumumab). 6. Subject has Eastern Cooperative Oncology Group performance status 0 or 1 7. Subject has radiographically-documented measurable disease, as per Response Evaluation Criteria in Solid Tumors version 1.1 criteria 8. Subject has adequate organ functions, evidenced by the following: a. Aspartate Aminotransferase (SGOT), Alanine Transaminase (SGPT) ≤ 2.5 × upper limit of normal range, or < 5 x upper limit of normal range if liver metastasis present b. Total bilirubin ≤ 1.5 × upper limit of normal range c. Creatinine ≤ 1.5 × upper limit of normal range 9. Subject has adequate bone marrow function, evidenced by the following: a. Absolute neutrophil count ≥ 1.5 × 109 cells/millimeters3 b. Platelets ≥ 100 × 109 cells/millimeters3 (transfusion independent, defined as not receiving platelet transfusions within 7 days prior to laboratory sample) c. Hemoglobin ≥ 9 grams/decilitre (transfusion is permitted to fulfill this criterion) 10. Females of child-bearing potential (defined as a sexually mature woman who (1) has not undergone hysterectomy [the surgical removal of the uterus] or bilateral oophorectomy [the surgical removal of both ovaries] or (2) has not been naturally postmenopausal for at least 24 consecutive months [i.e., has had menses at any time during the preceding 24 consecutive months]) must: a. Either commit to true abstinence* from heterosexual contact (which must be reviewed on a monthly basis), or agree to use, and be able to comply with, effective contraception without interruption, 28 days prior to starting Investigational Product therapy (including dose interruptions), and for 3 months following the last dose of Investigational Product; and b. Have a negative serum pregnancy test (β -human Chorionic Gonadotrophin) result at screening and agree to ongoing pregnancy testing during the course of the study, and after the end of study therapy. This applies even if the subject practices true abstinence* from heterosexual contact. * True abstinence is acceptable when this is in line with the preferred and usual lifestyle of the subject. Note: Periodic abstinence (e.g, calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception. 11. Male subjects must practice true abstinence* or agree to use a condom during sexual contact with a pregnant female or a female of childbearing potential while participating in the study, during dose interruptions and for 6 months following Investigational Product discontinuation, even if he has undergone a successful vasectomy. 12. Subject must understand and voluntarily sign an Informed Consent Form prior to any study related assessments or procedures being conducted. 13. Subject must be able to adhere to the study visit schedule and other protocol requirements. Exclusion Criteria: - 1. Subject has current or a history of brain metastasis. In subjects who are symptomatic, a brain scan is required to exclude metastasis. 2. Subject has ≥ National Cancer Institute Common Terminology Criteria for Adverse Events grade 2 peripheral neuropathy at screening 3. Subject has had prior treatme