TREATMENTS WITH NIROGACESTAT

1 - 49 . (canceled)

50 . A method for treating desmoid tumor in a patient in need thereof, where (i) the patient previously was treated for desmoid tumor with 150 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof orally twice daily and, during such prior treatment, experienced an alanine transaminase (ALT) or aspartate aminotransferase (AST) of 3 to 5 times upper limit of normal (ULN) and (ii) the ALT, AST, or both are resolved to less than 3 times ULN or baseline, the method comprising orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily.

51 . (canceled)

52 . A method for treating desmoid tumor in a patient in need thereof, where (i) the patient previously was treated for desmoid tumor with 150 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof orally twice daily and, during such prior treatment, experienced Grade 3 or 4 hypokalemia despite maximal replacement therapy and (ii) the hypokalemia is resolved to no higher than a Grade 1 hypokalemia or baseline, the method comprising orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily.

53 - 54 . (canceled)

55 . A method for treating desmoid tumor in a patient in need thereof, where (i) the patient previously was treated for desmoid tumor with 150 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof orally twice daily and, during such prior treatment, experienced Grade 3 or 4 hypophosphatemia despite maximal replacement therapy and (ii) the hypophosphatemia is resolved to no higher than a Grade 1 hypophosphatemia or baseline, the method comprising orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily.

56 . The method of claim 55 , wherein the Grade 3 or 4 hypophosphatemia persisted for at least 3 days despite maximal replacement therapy.

57 . The method of claim 52 , wherein the method comprises orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily without concomitant administration of a moderate or strong CYP3A inhibitor.

58 . The method of claim 52 , wherein the method comprises orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily without concomitant administration of a moderate or strong CYP3A inducer.

59 . The method of claim 52 , wherein the method comprises orally administering to the patient 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily without concomitant administration of a moderate or strong CYP3A inhibitor or a moderate or strong CYP3A inducer.

60 . The method of claim 57 , wherein the moderate or strong CYP3A inhibitor is selected from grapefruit products, Seville oranges, and starfruit.

61 . The method of claim 57 , wherein the method comprises avoiding concomitant administration of nirogacestat or a pharmaceutically acceptable salt thereof with starfruit, Seville oranges, grapefruit, and juice from any of these fruits.

62 . The method of claim 57 , wherein the strong CYP3A inhibitor is itraconazole, ketoconazole, or clarithromycin.

63 . The method of claim 57 , wherein the moderate CYP3A inhibitor is erythromycin or fluconazole.

64 . The method of claim 58 , wherein the strong CYP3A inducer is rifampin.

65 . The method of claim 58 , wherein the moderate CYP3A inducer is efavirenz.

66 . The method of claim 52 , wherein the method comprises avoiding concomitant administration of nirogacestat or a pharmaceutically acceptable salt thereof with a gastric acid reducing agent or an agent which increases gastric pH.

67 . The method of claim 52 , wherein the method comprises avoiding concomitant administration of nirogacestat or a pharmaceutically acceptable salt thereof with proton pump inhibitors, and H2-receptor antagonists.

68 . The method of claim 52 , wherein the method comprises avoiding concomitant administration of nirogacestat or a pharmaceutically acceptable salt thereof with proton pump inhibitors, H2-receptor antagonists, and antacids.

69 . The method of claim 52 , wherein the patient has a mutation in the adenomatous polyposis coli (APC) tumor suppressor gene.

70 . The method of claim 52 , wherein the patient has a mutation in the CTNNB1 (β-catenin) gene.

71 . The method of claim 52 , wherein the patient was previously treated with a tyrosine kinase inhibitor.

72 . The method of claim 52 , wherein the patient has intraabdominal tumors.

73 . The method of claim 52 , wherein the patient is an adult.

74 . The method of claim 52 , wherein the patient has a family history of familial adenomatous polyposis.

75 . The method of claim 52 , wherein the patient has refractory or recurrent disease after previous treatment.

76 . The method of claim 52 , wherein the patient is a treatment naïve patient.

77 . The method of claim 52 , wherein the patient is a post-menopausal woman.

78 . The method of claim 52 , wherein gastric acid reducing agents are avoided or administered 4 hours after administration of the nirogacestat or pharmaceutically acceptable salt thereof.

79 . The method of claim 52 , wherein the nirogacestat or pharmaceutically acceptable salt thereof is nirogacestat dihydrobromide.

80 . The method of claim 52 , wherein the patient exhibits, at steady state exposure from oral administration of 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily, a C max of nirogacestat of from about 100 to about 550 ng/mL.

81 . The method of claim 52 , wherein the patient exhibits, at steady state exposure from oral administration of 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily, an AUC last of nirogacestat of less than 3000 ng·h/mL.

82 . The method of claim 52 , wherein the patient exhibits, at steady state exposure from oral administration of 100 mg (free base equivalent dose) of nirogacestat or a pharmaceutically acceptable salt thereof twice daily, an AUC last of nirogacestat of from about 1500 to about 2800 ng·h/mL.

83 - 88 . (canceled)