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Drug Safety-related Labeling Changes (SrLC)

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ZARXIO (BLA-125553)

(FILGRASTIM-SNDZ)

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

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10/22/2024 (SUPPL-38)

Approved Drug Label (PDF)

8 Use in Specific Populations

8.4 Pediatric Use

Additions and/or revisions underlined:

The use of ZARXIO to increase survival in pediatric patients acutely exposed to myelosuppressive doses of radiation is based on studies of filgrastim conducted in animals and clinical data supporting the use of filgrastim in other approved indications [see Dosage and Administration (2.1 to 2.4) and Clinical Studies (14.6)].

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

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

Advise patients acutely exposed to myelosuppressive doses of radiation (Hematopoietic Syndrome of Acute Radiation Syndrome) that efficacy studies of filgrastim products for this indication could not be conducted in humans for ethical and feasibility reasons and that, therefore, approval of this use was based on efficacy studies conducted in animals [see Clinical Studies (14.6)].

PATIENT INFORMATION

Additions and/or revisions underlined:

What is ZARXIO?

ZARXIO is a man-made form of granulocyte colony-stimulating factor (G-CSF). G-CSF is a substance produced by the body. It stimulates the growth of neutrophils, a type of white blood cell important in the body’s fight against infection.

Acute Radiation Syndrome: The effectiveness of filgrastim for this use was only studied in animals, because it could not be studied in people.

How will I receive ZARXIO?

  • If you are receiving ZARXIO because you have been suddenly (acutely) exposed to an amount of radiation that can affect your bone marrow (Acute Radiation Syndrome), you will need to have blood tests about every 3 days during treatment with ZARXIO to check your white blood cell count.

08/09/2024 (SUPPL-35)

Approved Drug Label (PDF)

6 Adverse Reactions

6.2 Postmarketing Experience

Additions and revisions underlined:

The following adverse reactions have been identified during post-approval use of filgrastim products. 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.

. . .

      • extramedullary hematopoiesis

8 Use in Specific Populations

8.4 Pediatric Use

Additions and revisions underlined:

ZARXIO prefilled syringe with BD UltraSafe Passive® Needle Guard may not accurately measure volumes less than

0.3 mL due to the needle spring mechanism design. Therefore, the direct administration of a volume less than 0.3 mL using ZARXIO prefilled syringe is not recommended due to the potential for dosing errors. For direct administration of doses less than 0.3 mL (180 mcg) use ZARXIO single-dose vial.

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

PATIENT COUNSELING INFORMATION

Additions and revisions underlined:

. . .

If a patient or caregiver is not able to demonstrate that they can measure the dose and administer the product successfully, you should consider whether the patient is an appropriate candidate for self-administration of ZARXIO or whether the patient would benefit from a different ZARXIO presentation.

. . .

Instruct patients who self-administer ZARXIO using the prefilled syringe or single-dose vial of the:

    • Importance of following the applicable Instructions for Use.

    • Dangers of reusing needles, syringes or unused portions of single-dose vials.

    • Importance of following local requirements for proper disposal of used syringes, needles, and unused vials.

    • Importance of informing the healthcare provider if difficulty occurs when measuring or administering partial contents of the ZARXIO prefilled syringe. If difficulties occur, use of the ZARXIO vial may be considered.

Difference in product concentration of the ZARXIO prefilled syringe in comparison to the ZARXIO vial. When switching patients from the ZARXIO prefilled syringe to the ZARXIO vial, or vice versa, ensure that patients understand the correct volume to be administered since the concentration of ZARXIO differs between the prefilled syringe and the vial.
Patient Information

Additions and revisions underlined:

Ask your healthcare provider about using the vial if you have latex allergies. The vial stopper is not made with natural rubber latex.

 

How should I store ZARXIO?

  • Store ZARXIO in the refrigerator between 36°F to 46°F (2°C to 8°C).

  • Do not freeze.

  • Store ZARXIO in the original pack to protect it from light or physical damage. Do not leave ZARXIO in direct sunlight.

  • Do not shake ZARXIO.

  • Take ZARXIO out of the refrigerator 30 minutes before use and allow it to reach room temperature between 68°F to 77°F (20°C to 25°C) before preparing an injection.

  • If not used right away, ZARXIO may be kept at room temperature for up to 8 days. Throw away any ZARXIO that has been left at room temperature for longer than 8 days.

  • After you inject your dose, throw away (dispose of) any unused ZARXIO left in the prefilled syringe or vial. Do not

    save unused ZARXIO in the prefilled syringe or vial for later use.

07/26/2021 (SUPPL-23)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.8 Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML)

Additions underlined

Patients with Severe Chronic Neutropenia

Confirm the diagnosis of SCN before initiating ZARXIO therapy.

MDS and AML have been reported to occur in the natural history of congenital neutropenia without cytokine therapy. Cytogenetic abnormalities, transformation to MDS, and AML have also been observed in patients treated with filgrastim products for SCN. Based on available data including a postmarketing surveillance study, the risk of developing MDS and AML appears to be confined to the subset of patients with congenital neutropenia. Abnormal cytogenetics and MDS have been associated with the eventual development of myeloid leukemia. The effect of filgrastim products on the development of abnormal cytogenetics and the effect of continued filgrastim products administration in patients with abnormal cytogenetics or MDS are unknown. Monitor patients for signs and symptoms of MDS/AML in these settings. If a patient with SCN develops abnormal cytogenetics or myelodysplasia‚ the risks and benefits of continuing ZARXIO should be carefully considered.

Patients with Breast and Lung Cancer

MDS and AML have been associated with the use of filgrastim products in conjunction with chemotherapy and/or radiotherapy in patients with breast and lung cancer. Monitor patients for signs and symptoms of MDS/AML in these settings.

6 Adverse Reactions

Addition of the following to the bulleted line listing:

  • Myelodysplastic Syndrome [see Warnings and Precautions (5.8)]

  • Acute Myeloid Leukemia [see Warnings and Precautions (5.8)]

6.3 Postmarketing Experience

Addition of the following to the bulleted line listing:

  • myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) in patients with breast and lung cancer receiving chemotherapy and/or radiotherapy [see Warnings and Precautions (5.8)]

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

PATIENT COUNSELING INFORMATION

Additions underlined

  • There may be an increased risk of Myelodysplastic Syndrome and/or Acute Myeloid Leukemia in patients with congenital neutropenia who receive filgrastim and in patients with breast and lung cancer who receive filgrastim in conjunction with chemotherapy and/or radiation therapy. Symptoms of MDS and AML may include tiredness, fever, and easy bruising or bleeding. Advise patients to report to their physician signs and symptoms of MDS/AML [see Warnings and Precautions (5.8)].

PATIENT INFORMATION

Additions underlined

What are the possible side effects of ZARXIO?

ZARXIO may cause serious side effects, including:

  • Myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML).

    • ZARXIO may increase the risk of developing a precancerous condition called MDS or a type of blood cancer called AML in people who were born with low white blood cell counts (congenital neutropenia).

    • If you have breast cancer or lung cancer, when ZARXIO is used with chemotherapy and radiation therapy, or with radiation therapy only, you may have an increased risk of developing MDS or AML.

    • Symptoms of MDS and AML may include tiredness, fever, and easy bruising or bleeding.

    • Call your healthcare provider if you develop any of these symptoms during treatment with ZARXIO.

08/01/2019 (SUPPL-17)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.15 Aortitis

(new subsection added)

Aortitis has been reported in patients receiving filgrastim products. It may occur as early as the first week after start of therapy. Manifestations may include generalized signs and symptoms such as fever, abdominal pain, malaise, back pain, and increased inflammatory markers (e.g., c-reactive protein and white blood cell count). Consider aortitis in patients who develop these signs and symptoms without known etiology. Discontinue ZARXIO if aortitis is suspected.

5.4 Sickle Cell Disorders

(addition underlined)

Severe and sometimes fatal sickle cell crises can occur in patients with sickle cell disorders receiving filgrastim products. Discontinue ZARXIO if sickle cell crisis occurs.

6 Adverse Reactions

(addition underlined)

 

  • Aortitis

6.3 Postmarketing Experience

(addition underlined)

  • aortitis

8 Use in Specific Populations

8.1 Pregnancy

(PLLR conversion)

Risk Summary

 

Available data from published studies, including several observational studies of pregnancy outcomes in women exposed to filgrastim products and those who were unexposed, have not established an association with filgrastim products use during pregnancy and major birth defects, miscarriage, or adverse maternal or fetal outcomes (see Data). Reports in the scientific literature have described transplacental passage of filgrastim in pregnant women when administered ? 30 hours prior to preterm delivery (? 30 weeks gestation). In animal reproduction studies, effects of filgrastim on prenatal development have been studied in rats and rabbits. No malformations were observed in either species. No maternal or fetal effects were observed in pregnant rats at doses up to 58 times the human doses. Filgrastim has been shown to have adverse effects in pregnant rabbits at doses 2 to 10 times higher than the human doses (see Data).

 

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risks of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15- 20%, respectively.

 

Data

 

Human Data

 

Several observational studies based on the Severe Chronic Neutropenia International Registry (SCNIR) described pregnancy outcomes in women with severe chronic neutropenia (SCN) who were exposed to filgrastim products during pregnancy and women with SCN who were unexposed. No major differences were seen between treated and untreated women with respect to pregnancy outcome (including miscarriage and preterm labor), newborn complications (including birth weight), and infections. Methodological limitations of these studies include small sample size and lack of generalizability due to the underlying maternal condition.

 

Animal Data

 

Effects of filgrastim on prenatal development have been studied in rats and rabbits. No malformations were observed in either species. Filgrastim has been shown to have adverse effects in pregnant rabbits at doses 2 to 10 times higher than the human doses. In pregnant rabbits showing signs of maternal toxicity, reduced embryo-fetal survival (at 20 and

80 mcg/kg/day) and increased abortions (at 80 mcg/kg/day) were observed. In pregnant rats, no maternal or fetal effects were observed at doses up to 575 mcg/kg/day, which is approximately 58 times higher than the human dose of 10 mcg/kg/day.

 

Offspring of rats administered filgrastim during the peri-natal and lactation periods exhibited a delay in external differentiation and growth retardation (? 20 mcg/kg/day) and slightly reduced survival rate (100 mcg/kg/day).

8.2 Lactation

(PLLR conversion)

Risk Summary

 

There is published literature documenting transfer of filgrastim into human milk. There are a few case reports describing the use of filgrastim in breastfeeding mothers with no adverse effects noted in the infants. There are no data on the effects of filgrastim products on milk production. Other filgrastim products are secreted poorly into breast milk, and filgrastim products are not absorbed orally by neonates. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for ZARXIO and any potential adverse effects on the breastfed child from ZARXIO or from the underlying maternal condition.

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

PATIENT COUNSELING INFORMATION

(additions underlined)

  • Aortitis may occur. Symptoms may include fever, abdominal pain, malaise, back pain, and increased inflammatory markers. Advise patients to report signs and symptoms of aortitis to their physician immediately.

...

PATIENT INFORMATION

(additions underlined)

What are the possible side effects of ZARXIO?

 ZARXIO may cause serious side effects, including:

  • Inflammation of the aorta (aortitis). Inflammation of the aorta (the large blood vessel which transports blood from the heart to the body) has been reported in patients who received filgrastim products . Symptoms may include fever, abdominal pain, feeling tired, and back pain. Call your healthcare provider if you experience these symptoms.

The most common side effects experienced in patients receiving ZARXIO include:

    • Patients with cancer receiving chemotherapy: fever, pain, rash, cough, and shortness of breath

    • Patients with acute myeloid leukemia receiving chemotherapy: pain, nose bleed, and rash

    • Patients with cancer receiving chemotherapy followed by bone marrow transplant: rash

    • Patients who are having their own blood cells collected: bone pain, fever, and headache

    • Patients with severe chronic neutropenia: pain, decreased red blood cells, nose bleed, diarrhea, reduced sensation, and hair loss

02/17/2017 (SUPPL-7)

Approved Drug Label (PDF)

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

17 PATIENT COUNSELING INFORMATION

(Additions and/or revisions are underlined)

Advise the patient to read the FDA-approved patient labeling (Patient Information and Instructions for Use). Review the steps for direct patient administration with patients and caregivers. Training by the healthcare provider should aim to ensure that patients and caregivers can successfully perform all of the steps in the Instructions for Use of ZARXIO prefilled syringe, including showing the patient or caregiver how to measure the required dose, particularly if a patient is on a dose other than the entire prefilled syringe…

Instruct patients who self-administer ZARXIO using the prefilled syringe of the:

•         Importance of following the applicable Instructions for Use.

•         Dangers of reusing needles, and syringes.

•         Importance of following local requirements for proper disposal of used syringes.

•         Importance of informing the healthcare provider if difficulty occurs when measuring or administering partial contents of the ZARXIO prefilled syringe.

Patient Information ZARXIO® (zar-zee-oh) (filgrastim-sndz) injection

(Additions and/or revisions are underlined)

Before you take ZARXIO, tell your healthcare provider about all of your medical conditions, including if you:

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

•         ZARXIO injections can be given by a healthcare provider or nurse by intravenous (IV) infusion or under your skin (subcutaneous injection). Your healthcare provider may decide subcutaneous injections can be given at home by you or your caregiver...

•         Your healthcare provider will tell you how much ZARXIO to inject and when to inject it. Do not change your dose unless your doctor tells you to.

•         If you miss a dose of ZARXIO, talk to your healthcare provider about when you should give your next dose.

•         Your healthcare provider will do blood tests before and during treatment with ZARXIO to check your blood cell counts and to check you for side effects.

…Call your healthcare provider or get emergency medical help right away if you have shortness of breath with or without a fever, trouble breathing, or a fast rate of breathing.

•         Serious allergic reactions. ZARXIO can cause serious allergic reactions. These reactions can cause a rash over your whole body, shortness of breath, wheezing, dizziness, swelling around your mouth or eyes, fast heart rate, and sweating. If you have any of these symptoms, stop using ZARXIO and call your healthcare provider or get emergency medical help right away.

•         Sickle cell crises. You may have a serious sickle cell crisis if you have a sickle cell disorder and take ZARXIO. Serious sickle cell crisis has happened in people with sickle cell disorders receiving filgrastim that has sometimes led to death. Call your healthcare provider right away if you have symptoms of sickle cell crisis such as pain or difficulty breathing.

•         Kidney injury (glomerulonephritis). Kidney injury has been seen in patients who received ZARXIO. Call your healthcare provider right away if you develop any of the following symptoms:

         o swelling in your face or ankles

•         Decreased platelet count (thrombocytopenia). Your healthcare provider will check your blood during treatment with ZARXIO. Tell your healthcare provider if you have unusual bleeding or bruising during treatment with ZARXIO. This could be a sign of decreased platelet counts, which may reduce the ability of your blood to clot.

•         Increased white blood cell count (leukocytosis). Your healthcare provider will check your blood during treatment with ZARXIO.

•         Inflammation of your blood vessels (cutaneous vasculitis). Tell your healthcare provider if you develop purple spots or redness of your skin. The most common side effects of ZARXIO include aching in the bones and muscles. These are not all the possible side effects of ZARXIO. Call your healthcare provider for medical advice about side effects…

General information about the safe and effective use of ZARXIO:

… You can ask your pharmacist or healthcare provider for information about ZARXIO that is written for health professionals.

03/03/2016 (SUPPL-1)

Approved Drug Label (PDF)

5 Warnings and Precautions

Glomerulonephritis

Glomerulonephritis has occurred in patients receiving filgrastim products. The diagnoses were based upon azotemia, hematuria (microscopic and macroscopic), proteinuria, and renal biopsy. Generally, events of glomerulonephritis resolved after dose reduction or discontinuation of filgrastim products. If glomerulonephritis is suspected, evaluate for cause. If causality is likely, consider dose-reduction or interruption of Zarxio.

6 Adverse Reactions

Post Marketing Experience

Glomerulonephritis