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