Provided are methods for treating diseases, disorders, and conditions associated with undesirable cellular proliferation in subjects in need thereof. In some embodiments, the methods include administering to a subject in need thereof a therapeutically effective amount of a composition comprising, consisting essentially of, or consisting of a chemotherapeutic agent and a short chain ceramide. Also provided are methods for increasing total ceramide levels in cells, for increasing long chain ceramide to a very long chain ceramide ratios in cells, methods for enhancing apoptosis of cells, for prognosing subjects with diseases, disorders, and conditions associated with undesirable cellular proliferation with respect to treatments, for increasing sensitivities of drug-resistant tumor and/or cancer cells to chemotherapeutics, and compositions that have one or more short chain ceramides and one or more chemotherapeutically active agents.

Provided are methods for treating diseases, disorders, and conditions associated with undesirable cellular proliferation in subjects in need thereof. In some embodiments, the methods include administering to a subject in need thereof a therapeutically effective amount of a composition comprising, consisting essentially of, or consisting of a chemotherapeutic agent and a short chain ceramide. Also provided are methods for increasing total ceramide levels in cells, for increasing long chain ceramide to a very long chain ceramide ratios in cells, methods for enhancing apoptosis of cells, for prognosing subjects with diseases, disorders, and conditions associated with undesirable cellular proliferation with respect to treatments, for increasing sensitivities of drug-resistant tumor and/or cancer cells to chemotherapeutics, and compositions that have one or more short chain ceramides and one or more chemotherapeutically active agents.

Provided are compounds represented by Formula (I-A) and the pharmaceutically acceptable salts and solvates thereof, wherein R.sup.8, R.sup.9a, R.sup.9b, R.sup.9c, R.sup.9d, X, Y, Z, Z.sup.1, W, and (aa) are as defined as set forth in the specification. Provided are also compounds of Formula (I-A) for use to treat a condition or disorder responsive to Mcl-1 inhibition such as cancer. ##STR00001##

The molecular determinants of chronic pancreatitis leading to pancreatic cancer are underexplored. Genetic or pharmacological inactivation of signaling enzyme PBKa prevents pancreatic fibroinflammatory reaction, while increasing its regenerative capacities, which makes PBKa inhibitors an anti-cancer prevention dmg for these patients. Thus the present invention relates to a method for the prophylactic treatment of cancer in a patient suffering from pancreatitis comprising administering to the patient a therapeutically effective amount of a PBKa- selective inhibitor.

The molecular determinants of chronic pancreatitis leading to pancreatic cancer are underexplored. Genetic or pharmacological inactivation of signaling enzyme PBKa prevents pancreatic fibroinflammatory reaction, while increasing its regenerative capacities, which makes PBKa inhibitors an anti-cancer prevention dmg for these patients. Thus the present invention relates to a method for the prophylactic treatment of cancer in a patient suffering from pancreatitis comprising administering to the patient a therapeutically effective amount of a PBKa- selective inhibitor.

The invention provides for methods for treating a hair loss disorder in a subject by administering a Janus Kinase/Signal Transducers and Activators of Transcription inhibitor.

The present invention relates to compounds of formula (I) that are useful as hepatitis C virus (HCV) NS5A inhibitors, the synthesis of such compounds, and the use of such compounds for inhibiting HCV NS5A activity, for treating or preventing HCV infections and for inhibiting HCV viral replication and/or viral production in a cell-based system.

##STR00001##

The present invention relates to compounds of formula (I) that are useful as hepatitis C virus (HCV) NS5A inhibitors, the synthesis of such compounds, and the use of such compounds for inhibiting HCV NS5A activity, for treating or preventing HCV infections and for inhibiting HCV viral replication and/or viral production in a cell-based system.

##STR00001##

The present application relates to compounds of Formula (I), as defined herein, and pharmaceutically acceptable salts thereof. The present application also describes pharmaceutical composition comprising a compound of Formula (I), and pharmaceutically acceptable salts thereof, and methods of using the compounds and compositions for inhibiting kinase activity, and for treating cancer.

The present application relates to compounds of Formula (I), as defined herein, and pharmaceutically acceptable salts thereof. The present application also describes pharmaceutical composition comprising a compound of Formula (I), and pharmaceutically acceptable salts thereof, and methods of using the compounds and compositions for inhibiting kinase activity, and for treating cancer.