For those without private or public drug coverage, or if access is denied, there are other avenues available.
Patient Support Programs
You may qualify for a Patient Support Program offered by the manufacturer of the medication which can offer support to access the drug you require. In some cases, reimbursement assistance is available. In some cases, your physician's office may have to coordinate with the Patient Support Program whereas in others you the patient can reach out directly. Contact manufacturer for details.
If this option did not work for you, consider looking into a Clinical trial.
A clinical trial is a research study to determine whether a specific medicine, treatment or device is safe and effective for humans. For more information about clinical trials and the clinical trial process please see the Clinical Trials section
How to search for a clinical trial in your area?
Speak to your physician about any available clinical trials in your area.
Another good resource is http://www.clinicaltrials.gov. Simply enter your condition, click on "maps" and review the trials that are still accepting patients.