Drug Safety-related Labeling Changes (SrLC)

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Drug Safety-related Labeling Changes (SrLC) Database

ANDA	Abbreviated New Drug Application
BLA	Biologics License Application
CDER	Center for Drug Evaluation and Research
MG	Medication Guide
NDA	New Drug Application
PCI	Patient Counseling Information
PI	Patient Information
PLR	Physician Labeling Rule
PLLR	Pregnancy and Lactation Labeling Rule
Italics	For the most part, italics indicate an FDA comment such as: Additions and/or revisions underlined These italics usually appear at the beginning of the section. In some cases, italics may be an inherent part of the label, and will most often appear in the body of the section.
Underlines	Any text that is underlined indicates text that has been added or revised. There are exceptions where underlining occurs in a section subtitle or heading. This is the case when there is just one word underlined in the body of the text.

Sections

BW	Box Warning
WP	Warnings and Precautions all in one section (PLR-format) Warnings as one section (pre-PLR format) Precautions as one section (pre-PLR format)
AR	Adverse Reactions (in pre-PLR format, this may be a subheading under precautions).
DI	Drug Interactions (in pre-PLR format, this may be a subheading under precautions).
USP	Use in Specific Populations (Inclusive on one or more of the following: Pregnancy; Lactation (PLLR- format); Nursing Mothers (pre-PLLR format); Females and Males of Reproductive Potential (PLLR format only); Pediatric Use, Geriatric Use, Renal Impairment, Hepatic Impairment, Sex, Race (these last six may be a subheading of precautions if label in pre-PLLR format.
PCI/PI/MG	Patient Counseling Information (PLR format only) - summarizes the information that a health care provider should convey to a patient (or caregiver when applicable) when a counseling discussion is taking place (e.g., a physician prescribing a drug during an office visit, a nurse providing discharge instructions at a hospital, or a pharmacist conveying information at a pharmacy). Patient Information - FDA approved patient labeling. Medication Guide - paper handouts that come with many prescription medicines. The guides address issues that are specific to particular drugs and drug classes, and they contain FDA-approved information that can help patients avoid serious adverse events.

Only NDAs and CDER regulated BLAs are included in this database. ANDAs are not included.

Applications that remain active, even if the product has been discontinued, undergo safety-related labeling changes.

PRETOMANID (NDA-212862)

(PRETOMANID)

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

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11/22/2024 (SUPPL-8)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.3 Myelosuppression

Additions and/or revisions underlined:

Myelosuppression (including anemia, leukopenia, thrombocytopenia, and pancytopenia) was reported with the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid.

Myelosuppression is a known adverse reaction of linezolid. Anemia can be life threatening [see Warnings and Precautions (5.1), and Adverse Reactions (6.1)]. When linezolid dosing, as part of the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid, was reduced, interrupted, or discontinued, the observed hematologic abnormalities were reversible. Complete blood counts should be monitored at a minimum at baseline, at two weeks, and then monthly in patients receiving linezolid as part of the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid. Decreasing linezolid to half the initial dose or interrupting linezolid dosing should be considered in patients who develop or have worsening myelosuppression [see Dosage and Administration (2.2)].

5.4 Peripheral and Optic Neuropathy

Additions and/or revisions underlined:

Peripheral neuropathy and optic neuropathy were reported with the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid [see Warnings and Precautions (5.1), and Adverse Reactions (6.1)]. Neuropathy is a known adverse reaction of long-term linezolid use. Neuropathy associated with linezolid is generally reversible or improved with appropriate monitoring and interruption, dose reduction, or discontinuation of linezolid dosing. When improvement in the peripheral neuropathy is observed, consider resuming linezolid at half the initial dose [see Dosage and Administration (2.2)]. Monitor visual function in all patients receiving the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid; if a patient experiences symptoms of visual impairment, interrupt linezolid dosing and obtain prompt ophthalmologic evaluation.

6 Adverse Reactions

6.1 Clinical Trials Experience

Extensive changes; please refer to label for complete information

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

Extensive changes; please refer to label for complete information

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

…

Serious Adverse Reactions

Advise patients that the following serious adverse reactions can occur with the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid: liver enzyme abnormalities, myelosuppression including anemia, peripheral and optic neuropathy, and cardiac rhythm abnormalities [see Warnings and Precautions (5.2, 5.4)].

Additional serious adverse reactions can occur with the use of linezolid, including serotonin syndrome, lactic acidosis, and convulsions. Refer to the prescribing information for linezolid for additional counseling information for these serious adverse reactions.

…

Important Administration Instructions

Inform patients to take the regimen with food. Doses of the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid missed for safety reasons can be made up at the end of treatment; doses of linezolid alone missed due to linezolid adverse reactions should not be made up. If bedaquiline and/or Pretomanid Tablets are permanently discontinued, the entire combination regimen of Pretomanid Tablets, bedaquiline, and linezolid should be discontinued.
Advise patients who have difficulty swallowing tablets that Pretomanid Tablets can be crushed and suspended in water at room temperature. Alternately, the tablet can be soaked for 4 to 5 minutes in room temperature water and then the remaining solid crushed [see Dosage and Administration (2.2)].

…

12/21/2022 (SUPPL-4)

Approved Drug Label (PDF)

6 Adverse Reactions

6.1 Clinical Trials Experience

Additions and revisions underlined:

. . .

More than 1691 subjects, at least 1348 patients with tuberculosis and 343 healthy volunteers, have been exposed to Pretomanid Tablets, either alone or as part of a combination therapy in 24 trials.

The registrational trial, Trial 1 (NCT02333799), was a single-arm, open-label trial conducted in three sites in South Africa in which adult patients with pulmonary TB resistant to isoniazid, rifamycins, a fluoroquinolone and a second line injectable antibacterial drug or pulmonary TB resistant to isoniazid and rifampin, who were treatment-intolerant or non-responsive to standard therapy received the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid for 6 months (extendable to 9 months) with 24 months of follow-up.

7 Drug Interactions

7.1 Effect of Pretomanid on Other Drugs

Additions and revisions underlined:

. . .

If pretomanid is co-administered with OAT3 substrate drugs (e.g., methotrexate, indomethacin, ciprofloxacin), increase monitoring for OAT3 substrate drug-related adverse reactions and consider dosage reduction for OAT3 substrate drugs, if needed. Refer to the prescribing information of the co-administered drug for dosage reduction information.

In vitro studies cannot exclude the possibility that pretomanid is an inhibitor of BCRP, OATP1B3 and P-gp [see Clinical Pharmacology (12.3)]. No clinical studies have been performed to investigate these interactions. Therefore, it cannot be excluded that co-administration of pretomanid with sensitive OATP1B3 substrates (e.g., valsartan, statins), BCRP substrates (e.g., rosuvastatin, prazosin, glyburide, sulfasalazine) and P-gp substrates (e.g., digoxin, dabigatran etexilate, verapamil) may increase their exposure. If pretomanid is co-administered with substrates of OATP1B3, BCRP, or P-gp, increased monitoring for drug-related adverse reactions to the co- administered medicinal product should be performed.

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

Medication Guide

Additions and revisions underlined:

What is the combination regimen of Pretomanid Tablets, bedaquiline, and linezolid?

Pretomanid Tablets are a prescription medicine used as part of a combination regimen with bedaquiline and linezolid. The combination regimen of Pretomanid Tablets, bedaquiline, and linezolid includes three prescription antibiotics that are used together in adults to treat tuberculosis (TB) of the lungs that is resistant to other classes of antibiotics (isoniazid, rifamycins, a fluoroquinolone and a second line injectable antibiotic) or in adults who cannot tolerate or do not respond to treatment for TB that is resistant to two specific antibiotics (isoniazid and rifampin).

Pretomanid Tablets are not for use in people who have:

TB that is not resistant to antibiotics.
an inactive (latent) TB infection.
a type of TB other than TB of the lungs.
TB resistant to isoniazid and rifampin who can tolerate or who respond to medicines usually used to treat this type of TB.

TB that is known to be resistant to Pretomanid Tablets, bedaquiline, or linezolid.

Patient Counseling Information

Newly added information:

Inform the patient or caregiver that Pretomanid Tablets administered as a combination regimen with bedaquiline and linezolid would be useful only in adult patients with TB resistant to isoniazid, rifamycins, a fluoroquinolone and a second line injectable antibacterial drug or TB resistant to isoniazid and rifampin, who are treatment-intolerant or nonresponsive to standard therapy. This regimen is not indicated for treatment in patients with latent infection or extra-pulmonary infection due to M. tuberculosis, drug-sensitive TB, TB resistant to isoniazid and rifampin who are responsive to standard therapy and not treatment-intolerant, or who have TB with known resistance to any component of the regimen (Pretomanid Tablets, bedaquiline, or linezolid).