Atrasentan

Generic Name: atrasentan

Over-the-Counter (OTC)

Brand Names:

Vanrafia

11 DESCRIPTION VANRAFIA contains atrasentan, an endothelin type A (ET A ) receptor antagonist. The chemical name of atrasentan hydrochloride is (2 R , 3 R , 4 S )-4-(1,3-benzodioxol-5-yl)-1-[2-(dibutylamino)-2-oxoethyl]-2-(4-methoxyphenyl)-3-pyrrolidinecarboxylic acid hydrochloride. Atrasentan hydrochloride has a molecular weight of 547.09 g/mol, a molecular formula of C 29 H 38 N 2 O 6 HCl and the following structural formula.

Overview

11 DESCRIPTION VANRAFIA contains atrasentan, an endothelin type A (ET A ) receptor antagonist. The chemical name of atrasentan hydrochloride is (2 R , 3 R , 4 S )-4-(1,3-benzodioxol-5-yl)-1-[2-(dibutylamino)-2-oxoethyl]-2-(4-methoxyphenyl)-3-pyrrolidinecarboxylic acid hydrochloride. Atrasentan hydrochloride has a molecular weight of 547.09 g/mol, a molecular formula of C 29 H 38 N 2 O 6 HCl and the following structural formula.

Uses

1 INDICATIONS AND USAGE VANRAFIA is indicated to reduce proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) at risk of rapid disease progression, generally a urine protein-to-creatinine ratio (UPCR) ≥ 1.5 g/g. This indication is approved under accelerated approval based on a reduction of proteinuria [see Clinical Studies (14.1)] . It has not been established whether VANRAFIA slows kidney function decline in patients with IgAN. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory clinical trial.

Dosage

2 DOSAGE AND ADMINISTRATION 0.75 mg orally once daily with or without food ( 2.2 ) 2.1 Pregnancy Testing Exclude pregnancy before initiating VANRAFIA [see Warnings and Precautions (5.1), Use in Specific Populations (8.1, 8.3)] . 2.2 Recommended Dosage The recommended dose of VANRAFIA is 0.75 mg administered orally once daily with or without food [see Clinical Pharmacology (12.3)] . Swallow tablets whole. Do not cut, crush, or chew. If a dose or doses are missed, take the prescribed dose at the next scheduled time. Do not double the dose to make up for a missed dose.

Side Effects

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Embryo-fetal Toxicity [see Warnings and Precautions (5.1)] Hepatotoxicity [see Warnings and Precautions (5.2)] Fluid Retention [see Warnings and Precautions (5.3)] Decreased Sperm Counts [see Warnings and Precautions (5.4)] Most common adverse reactions (incidence ≥ 5%) were peripheral edema and anemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Novartis Pharmaceuticals Corporation at 1-888-669-6682 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

Interactions

7 DRUG INTERACTIONS Strong or moderate CYP3A inducers: Avoid concomitant use. ( 7.1 ) OATP1B1/1B3 inhibitors: Avoid concomitant use. ( 7.1 ) 7.1 Effect of Other Drugs on VANRAFIA Strong or Moderate CYP3A Inducers Avoid concomitant use with a strong or moderate CYP3A inducer. Atrasentan is a CYP3A substrate [see Clinical Pharmacology (12.3)] . Concomitant use with a strong and moderate CYP3A inducer is expected to decrease atrasentan exposure [see Clinical Pharmacology (12.3)] , which may reduce VANRAFIA efficacy. OATP1B1/1B3 Inhibitors Avoid concomitant use with organic anion transporting polypeptides 1B1/1B3 (OATP1B1/1B3) inhibitors. Atrasentan is a OATP1B1/1B3 substrate [see Clinical Pharmacology (12.3)] .

Warnings

WARNING: EMBRYO-FETAL TOXICITY VANRAFIA is contraindicated for use in pregnant patients; it may cause major birth defects based on animal data [see Contraindications (4.1), Warnings and Precautions (5.1), Use in Specific Populations (8.1)] . Exclude pregnancy prior to initiation of treatment with VANRAFIA. Advise use of effective contraception before the initiation of treatment, during treatment, and for two weeks after discontinuation of treatment with VANRAFIA. 5 WARNINGS AND PRECAUTIONS Hepatotoxicity ( 5.2 ) Fluid Retention ( 5.3 ) Decreased Sperm Counts ( 5.4 , 8.3 ) 5.1 Embryo-Fetal Toxicity Based on data from animal reproduction studies, VANRAFIA may cause fetal harm when administered to a pregnant patient and is contraindicated during pregnancy. The available human data for endothelin receptor antagonists do not establish the presence or absence of major birth defects related to the use of VANRAFIA. Counsel patients who can become pregnant of the potential risk to a fetus. Exclude pregnancy prior to initiation of treatment with VANRAFIA. 4 CONTRAINDICATIONS Pregnancy ( 4.1 ) Hypersensitivity ( 4.2 ) 4.1 Pregnancy Use of VANRAFIA is contraindicated in patients who are pregnant [see Dosage and Administration (2.1), Warnings and Precautions (5.1), Use in Specific Populations (8.1)] .

Pregnancy

8.1 Pregnancy Risk Summary Based on data from animal reproductive toxicity studies, VANRAFIA may cause fetal harm, including birth defects and fetal death, when administered to a pregnant patient and is contraindicated during pregnancy [see Contraindications (4.1)] . There are no available data on VANRAFIA use in pregnancy to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes.

Storage

16 HOW SUPPLIED/STORAGE AND HANDLING VANRAFIA is supplied as follows: 0.75 mg tablets are film-coated, round, biconvex, white to off-white tablets debossed with “7” on one side and unmarked on the other side, packaged in a high-density polyethylene (HDPE) bottle containing a desiccant, with induction seal and child-resistant cap. Each bottle contains 30 tablets (NDC 0078-1420-15).

Frequently Asked Questions

What is Atrasentan used for?

1 INDICATIONS AND USAGE VANRAFIA is indicated to reduce proteinuria in adults with primary immunoglobulin A nephropathy (IgAN) at risk of rapid disease progression, generally a urine protein-to-creatinine ratio (UPCR) ≥ 1.5 g/g. This indication is approved under accelerated approval based on a reduction of proteinuria [see Clinical Studies (14.1)] . It has not been established whether VANRAFIA slows kidney function decline in patients with IgAN. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory clinical trial.

What are the side effects of Atrasentan?

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Embryo-fetal Toxicity [see Warnings and Precautions (5.1)] Hepatotoxicity [see Warnings and Precautions (5.2)] Fluid Retention [see Warnings and Precautions (5.3)] Decreased Sperm Counts [see Warnings and Precautions (5.4)] Most common adverse reactions (incidence ≥ 5%) were peripheral edema and anemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Novartis Pharmaceuticals Corporation at 1-888-669-6682 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

Can I take Atrasentan during pregnancy?

8.1 Pregnancy Risk Summary Based on data from animal reproductive toxicity studies, VANRAFIA may cause fetal harm, including birth defects and fetal death, when administered to a pregnant patient and is contraindicated during pregnancy [see Contraindications (4.1)] . There are no available data on VANRAFIA use in pregnancy to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes.

What are the important warnings for Atrasentan?

WARNING: EMBRYO-FETAL TOXICITY VANRAFIA is contraindicated for use in pregnant patients; it may cause major birth defects based on animal data [see Contraindications (4.1), Warnings and Precautions (5.1), Use in Specific Populations (8.1)] . Exclude pregnancy prior to initiation of treatment with VANRAFIA. Advise use of effective contraception before the initiation of treatment, during treatment, and for two weeks after discontinuation of treatment with VANRAFIA. 5 WARNINGS AND PRECAUTIONS Hepatotoxicity ( 5.2 ) Fluid Retention ( 5.3 ) Decreased Sperm Counts ( 5.4 , 8.3 ) 5.1 Embryo-Fetal Toxicity Based on data from animal reproduction studies, VANRAFIA may cause fetal harm when administered to a pregnant patient and is contraindicated during pregnancy. The available human data for endothelin receptor antagonists do not establish the presence or absence of major birth defects related to the use of VANRAFIA. Counsel patients who can become pregnant of the potential risk to a fetus. Exclude pregnancy prior to initiation of treatment with VANRAFIA. 4 CONTRAINDICATIONS Pregnancy ( 4.1 ) Hypersensitivity ( 4.2 ) 4.1 Pregnancy Use of VANRAFIA is contraindicated in patients who are pregnant [see Dosage and Administration (2.1), Warnings and Precautions (5.1), Use in Specific Populations (8.1)] .

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.