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Drug Safety-related Labeling Changes (SrLC)

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DOPTELET (NDA-210238)

(AVATROMBOPAG MALEATE)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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07/24/2025 (SUPPL-10)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Thrombotic/Thromboembolic Complications

Additions and/or revisions underlined:

. . .

In adult patients with chronic immune thrombocytopenia, thromboembolic events (arterial or venous) occurred in 7% (9/128) of patients receiving DOPTELET.

Consider the potential increased thrombotic risk when administering DOPTELET to patients with known risk factors for thromboembolism, including genetic prothrombotic conditions (e.g., Factor V Leiden, Prothrombin 20210A, Antithrombin deficiency or Protein C or S deficiency) and acquired risk factors (e.g., antiphospholipid syndrome).

. . .

6 Adverse Reactions

6.1 Clinical Trials Experience

Extensive changes; please refer to label for complete information

7 Drug Interactions

Subsection title revised

7.1 Effect of Other Drugs on DOPTELET in Patients with Persistent or Chronic Immune Thrombocytopenia

8 Use in Specific Populations

8.4 Pediatric Use

Additions and/or revisions underlined:

The safety and effectiveness of DOPTELET tablet for the treatment of persistent or chronic ITP have been established in pediatric patients aged 6 years and older. The safety and effectiveness of DOPTELET SPRINKLE for the treatment of persistent or chronic ITP have been established in pediatric patients aged 1 to less 6 years. Use of DOPTELET tablet and DOPTELET SPRINKLE for their respective populations is supported by evidence from an adequate and well-controlled study in pediatric patients aged 1 year and older [see Adverse Reactions (6.1), Clinical Pharmacology (12.3), and Clinical Studies (14.3)].

Juvenile Animal Toxicity Data

. . .

 

8.5 Geriatric Use

Additions and/or revisions underlined:

There were 112 patients 65 years of age and older in the clinical studies for Chronic Liver Disease and Chronic Immune Thrombocytopenia [see Clinical Studies (14.1 and 14.2)]. Of the total number of DOPTELET-treated patients in these studies, 71 (23%) were 65 years of age and older, while 12 (4%) were 75 years of age and older. Clinical studies of DOPTELET did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

. . .

Administration Instructions for DOPTELET SPRINKLE

  • Inform patients and caregivers to open the capsules and mix the contents with the recommended soft foods or liquids. Administer immediately after mixing. Do not swallow the capsules whole. Do not chew or crush the granules.

  • Advise patients and caregivers to read and follow the Instructions for Use for DOPTELET SPRINKLE.

DOPTELET and DOPTELET SPRINKLE are not substitutable on a milligram-to-milligram basis

  • Advise patients and caregivers that DOPTELET and DOPTELET SPRINKLE are not substitutable on a milligram-to-milligram basis.

  • To avoid a dosing error from using the wrong dosage form, strongly advise patients and caregivers to visually inspect the product to verify the correct dosage form each time the prescription is filled.

07/18/2024 (SUPPL-9)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Thrombotic/Thromboembolic Complications

Additions and/or revisions underlined:

Consider the potential increased thrombotic risk when administering DOPTELET to patients with known risk factors for thromboembolism, including genetic prothrombotic conditions (e.g., Factor V Leiden, Prothrombin 20210A, Antithrombin deficiency or Protein C or S deficiency) and acquired risk factors (e.g., antiphospholipid syndrome).

10/14/2021 (SUPPL-6)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Thrombotic/Thromboembolic Complications

(Additions and/or revisions underlined)

DOPTELET is a thrombopoietin (TPO) receptor agonist and TPO receptor agonists have been associated with thrombotic and thromboembolic complications in patients with chronic liver disease or chronic immune thrombocytopenia. In patients with chronic liver disease, thromboembolic events (portal vein thrombosis) occurred in 0.4% (1/274) of patients receiving DOPTELET. In patients with chronic immune thrombocytopenia, thromboembolic events (arterial or venous) occurred in 7% (9/128) of patients receiving DOPTELET.

Consider the potential increased thrombotic risk when administering DOPTELET to patients with known risk factors for thromboembolism, including genetic prothrombotic conditions (e.g., Factor V Leiden, Prothrombin 20210A, Antithrombin deficiency or Protein C or S deficiency).

DOPTELET should not be administered to patients with chronic liver disease or chronic immune thrombocytopenia in an attempt to normalize platelet counts. Monitor platelet counts and follow the dosing guidelines to achieve target platelet counts [see Dosage and Administration (2.2)]. Monitor patients receiving DOPTELET for signs and symptoms of thromboembolic events and institute treatment promptly.

08/20/2020 (SUPPL-4)

Approved Drug Label (PDF)

6 Adverse Reactions

Newly added subsection:

6.2 Postmarketing Experience

The following adverse reactions have been identified during post approval use of DOPTELET. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Immune System Disorders: Hypersensitivity reactions including pruritus, rash, choking sensation, erythema, pharyngeal edema, pruritus generalized, rash macular, swelling face, and swollen tongue.

06/26/2019 (SUPPL-1)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Thrombotic/Thromboembolic Complications

(additions underlined)

DOPTELET is a thrombopoietin (TPO) receptor agonist and TPO receptor agonists have been associated with thrombotic and thromboembolic complications in patients with chronic liver disease or chronic immune thrombocytopenia. In patients with chronic liver disease, thromboembolic events (portal vein thrombosis) occurred in 0.2% (1/430) of patients receiving DOPTELET. In patients with chronic immune thrombocytopenia, thromboembolic events (arterial or venous) occurred in 7% (9/128) of patients receiving DOPTELET.

DOPTELET should not be administered to patients with chronic liver disease or chronic immune thrombocytopenia in an attempt to normalize platelet counts. Follow the dosing guidelines to achieve target platelet counts. Monitor patients receiving DOPTELET for signs and symptoms of thromboembolic events and institute treatment promptly.

6 Adverse Reactions

6.1 Clinical Trials Experience

(additions underlined)

 

Patients with Chronic Immune Thrombocytopenia

The safety of DOPTELET was evaluated in four clinical trials in patients with chronic immune thrombocytopenia: two Phase 3 trials (one randomized, double-blind, placebo-controlled trial, and one randomized, double-blind, active-controlled trial) and two Phase 2 trials (one randomized, double-blind, placebo-controlled, dose-ranging, trial, and one open-label extension trial) in 161 patients with chronic immune thrombocytopenia in both the double-blind and open-label extension phases.

The pooled safety data from these four clinical trials includes 128 patients who received 2.5 to 40 mg of DOPTELET once daily for a median duration of exposure of 29.1 weeks and had 1 post-dose safety assessment. The majority of patients were female (63%) and median subject age was 50.5 years (ranging from 18-88 years of age). The racial and ethnic distribution was White (84%), Black (6%), Asian (6%) and Other (6%).

The most common adverse reactions (those occurring in greater than or equal to10% of patients) in the DOPTELET-treated patients across the pooled safety data from the four trials are summarized in Table 6.

(please refer to label to view table 6)

 

The incidence of serious adverse reactions was 9% (12/128) in the DOPTELET treatment group. Serious adverse reactions reported in more than 1 individual DOPTELET-treated patient included headache, occurring in 1.6% (2/128).

Adverse reactions resulting in discontinuation of DOPTELET that were reported in more than 1 patient included headache, occurring in 1.6% (2/128).

7 Drug Interactions

(new subsection added)

 7.1 Effect of Other Drugs on DOPTELET in Patients with Chronic Immune Thrombocytopenia

Moderate or Strong Dual Inhibitors of CYP2C9 and CYP3A4

Concomitant use with a moderate or strong dual inhibitor of CYP2C9 and CYP3A4 increases avatrombopag AUC,  which may increase the risk of DOPTELET toxicities. Reduce the starting dosage of DOPTELET when used concomitantly with a moderate or strong dual inhibitor of CYP2C9 and CYP3A4 (see Table 4).

In patients starting moderate or strong dual inhibitors of CYP2C9 and CYP3A4 while receiving DOPTELET, monitor platelet counts and adjust DOPTELET dose as necessary (see Table 3) .

Moderate or Strong Dual Inducers of CYP2C9 and CYP3A4

Concomitant use with a moderate or strong dual inducer of CYP2C9 and CYP3A4 decreases avatrombopag AUC which may reduce DOPTELET efficacy. Increase the recommended starting dosage of DOPTELET when used concomitantly with a moderate or strong dual inducer of CYP2C9 and CYP3A4 (see Table 4).

In patients starting moderate or strong dual inducers of CYP2C9 and CYP3A4 while receiving DOPTELET, monitor platelet counts and adjust dose as necessary (see Table 3).

Patients with Chronic Liver Disease

No dosage adjustments are required for patients with chronic liver disease.

8 Use in Specific Populations

8.1 Pregnancy

(additions underlined)

However, these findings were observed at exposures based on an AUC substantially higher than the AUC observed in patients at the maximum recommended dose of 60 mg once daily. Advise pregnant women of the potential risk to a fetus.

 

Data

Animal Data

Spontaneous abortions were observed at all doses tested in rabbits and were associated with decreased body weights and food consumption at 300 and 600 mg/kg/day; exposures at the lowest dose of 100 mg/kg/day were 10-times the AUC in patients at the maximum recommended dose of 60 mg once daily.

8.2 Lactation

(additions underlined)

Clinical Considerations

Minimizing-Exposure

A lactating woman, receiving DOPTELET for brief periods, such as prior to an invasive procedure, should interrupt breastfeeding and pump and discard breastmilk during treatment and for two weeks after the last dose of DOPTELET in order to minimize exposure to a breastfed child. Advise lactating women receiving chronic DOPTELET therapy not to breastfeed during treatment with DOPTELET and for at least 2 weeks after the last dose.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

(additions underlined)

Risks

Thrombotic/Thromboembolic Complications

DOPTELET is a thrombopoietin (TPO) receptor agonist and TPO receptor agonists have been associated with thrombotic and thromboembolic complications in patients with chronic liver disease or chronic immune thrombocytopenia. Portal vein thrombosis has been reported in patients with chronic liver disease treated with TPO receptor agonists. Various thromboembolic complications (arterial and venous) have been reported in patients treated with DOPTELET .

Drug Interactions

DOPTELET may be affected by other drugs and may require a dose adjustment when co-administered with other drugs; therefore, advise patients to report their use of any other prescription or nonprescription medications or dietary supplements.

PATIENT INFORMATION

(additions underlined)

How should I take DOPTELET?

  • Your healthcare provider may change your dose of DOPTELET depending on your blood platelet counts.

  • If you take DOPTELET to treat your low blood platelet counts due to chronic immune thrombocytopenia, your healthcare provider will check your platelet count before, during and for at least 4 weeks after stopping your treatment with DOPTELET.

 

  • If you are taking DOPTELET prior to a scheduled medical procedure and you miss a dose, contact your healthcare provider for further dosing instructions.

  • If you are taking DOPTELET for chronic immune thrombocytopenia and you miss a dose of DOPTELET, take it as soon as you remember. Do not take 2 doses at one time to make up for a missed dose. Take your next dose at your usual scheduled time.

 

The most common side effects of DOPTELET when used to treat low blood platelet counts in adults with chronic liver disease (CLD) who are scheduled to have a medical or dental procedure are:

  • Fever

  • stomach (abdominal) pain                                                            

  • nausea

  • headache

  • tiredness

  • swelling of hands or feet

                                                                                                                   

The most common side effects of DOPTELET when used to treat low blood platelet counts in adults with chronic immune thrombocytopenia (ITP) are:

 

  • headache

  • tiredness

  • bruising

  • nosebleed

  • upper respiratory tract infection

  • joint pain

  • bleeding gums

  • purple or red spots on your skin

  • runny nose

 

03/21/2019 (SUPPL-2)

Approved Drug Label (PDF)

8 Use in Specific Populations

8.4 Pediatric Use

Newly added information:

In a 10-week juvenile toxicology study in rats, avatrombopag was administered at doses ranging from 20 to 300 mg/kg/day. There were no test article-related mortality or clinical signs at doses up to 300 mg/kg/day. In the stomach, dose-dependent degeneration, regenerative hyperplasia, and atrophy of the glandular epithelium occurred at 100 and 300 mg/kg/day; exposures at 100 mg/kg/day in male rats were 14-times the AUC in patients at the recommended dose of 60 mg once daily. An increased incidence of background focal mineralization was also observed in the kidneys of females at 300 mg/kg/day (female rat exposure was 50-times the human exposure based on AUC at the 60 mg daily dose).