Gadoteridol

FDA Drug Information • Also known as: Gadoteridol, Prohance

Brand Names: Gadoteridol, Prohance
Dosage Form: POWDER
Product Type: BULK INGREDIENT

⚠ Boxed Warning (Black Box)

WARNING: RISK ASSOCIATED WITH INTRATHECAL USE and NEPHROGENIC SYSTEMIC FIBROSIS Risk Associated with Intrathecal Use Intrathecal administration of gadolinium-based contrast agents (GBCAs) can cause serious adverse reactions including death, coma, encephalopathy, and seizures. ProHance is not approved for intrathecal use [see Warnings and Precautions ( 5.1 )] . Nephrogenic Systemic Fibrosis GBCAs increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of ProHance in these patients unless the diagnostic information is essential and not available with non- contrasted MRI or other modalities. NSF may result in fatal or debilitating systemic fibrosis affecting the skin, muscle and internal organs. The risk for NSF appears highest among patients with: chronic, severe kidney disease (GFR less than 30 mL/min/1.73m 2 ), or acute kidney injury Screen patients for acute kidney injury and other conditions that may reduce renal function. For patients at risk for chronically reduced renal function (e.g. age greater than 60 years, hypertension or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing. For patients at highest risk for NSF, do not exceed the recommended ProHance dose and allow a sufficient period of time for elimination of the drug from the body prior to re-administration [see Warnings and Precautions ( 5.2 )] . WARNING: RISK ASSOCIATED WITH INTRATHECAL USE and NEPHROGENIC SYSTEMIC FIBROSIS See full prescribing information for complete boxed warning Intrathecal administration of gadolinium based contrast agents (GBCAs) can cause serious adverse reactions including death, coma, encephalopathy, and seizures. ProHance is not approved for intrathecal use. ( 5.1 ) GBCAs increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of ProHance in these patients unless the diagnostic information is essential and not available with non-contrasted MRI or other modalities. NSF may result in fatal or debilitating systemic fibrosis affecting the skin, muscle and internal organs. The risk for NSF appears highest among patients with: chronic, severe kidney disease (GFR less than 30 mL/min/1.73m 2 ), or acute kidney injury Screen patients for acute kidney injury and other conditions that may reduce renal function. For patients at risk for chronically reduced renal function (e.g. age greater than 60 years, hypertension or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing ( 5.2 ).

Description

11 DESCRIPTION ProHance, a gadolinium-based paramagnetic MRI contrast agent, is a colorless to slightly yellow aqueous, sterile, nonpyrogenic injectable solution. Each mL contains 279.3 mg (0.5 mmol/mL) gadoteridol, 0.23 mg calteridol calcium, 1.21 mg tromethamine and water for injection; pH adjusted with hydrochloric acid and/or sodium hydroxide. ProHance contains no antimicrobial preservative. Gadoteridol is the gadolinium complex of 10-(2-hydroxy-propyl)-1,4,7,10- tetraazacyclododecane-1,4,7-triacetic acid with a molecular weight of 558.7, an empirical formula of C 17 H 29 N 4 O 7 Gd and has the following structural formula: ProHance has a pH of 6.5 to 8.0. Pertinent physiochemical parameters are provided below: Osmolality 630 mOsmol/kg water at 37 °C Viscosity 1.3 cP at 37 °C Density 1.137 g/mL at 25 °C ProHance has an osmolality that is 2.2 times that of plasma (285 mOsmol/kg water) and is hypertonic under conditions of use. Prohance Structure

What Is Gadoteridol Used For?

1 INDICATIONS AND USAGE ProHance is a gadolinium-based contrast agent indicated for magnetic resonance imaging (MRI) to visualize: lesions with disrupted blood brain barrier and/or abnormal vascularity in the brain (intracranial lesions), spine and associated tissues in adults and pediatric patients, including term neonates ( 1.1 ) lesions in the head and neck in adults ( 1.2 ) 1.1 MRI of the Central Nervous System (CNS) ProHance is indicated for magnetic resonance imaging (MRI) in adults and pediatric patients including term neonates to visualize lesions with disrupted blood brain barrier and/or abnormal vascularity in the brain (intracranial lesions), spine and associated tissues. 1.2 MRI of Extracranial/Extraspinal Head and Neck ProHance is indicated for MRI in adults to visualize lesions in the head and neck.

Dosage and Administration

2 DOSAGE AND ADMINISTRATION Recommended dose in adult and pediatric patients is 0.2 mL/kg (0.1 mmol/kg) body weight administered as rapid intravenous infusion or bolus ( 2.1 ) Follow injection with a saline flush of at least 5 mL normal saline ( 2.1 ) 2.1 Recommended Dose The recommended dose for adult and pediatric patients, including term neonates, is 0.2 mL/kg (0.1 mmol/kg) administered as a rapid intravenous infusion (10 mL/min to 60 mL/min) or bolus (greater than 60 mL/min). Table 1 provides weight-adjusted recommended dose volumes. Table 1: Recommended Volume of ProHance Injection by Body Weight Body Weight (kg) Volume to be Administered (mL) 2.5 0.5 5 1 10 2 20 4 30 6 40 8 50 10 60 12 70 14 80 16 90 18 100 20 110 22 120 24 130 26 140 28 150 30 MRI of the CNS in Adults : A supplementary dose of 0.4 mL/kg (0.2 mmol/kg) may be given up to 30 minutes after the first dose in adult patients with normal renal function suspected of having poorly visualized CNS lesions, in the presence of negative or equivocal scans The safety and efficacy of supplementary dosing have not been established in pediatric patients 2.2 Administration Visually inspect ProHance for particulate matter and discoloration prior to use Do not administer the solution if it is discolored or particulate matter is present Concurrent medications or parenteral nutrition should not be physically mixed with contrast agents and should not be administered in the same intravenous line because of the potential for chemical incompatibility Inject at least a 5 mL normal saline flush immediately after ProHance injection to ensure complete administration Imaging procedures should be completed within 1 hour ProHance vials are intended only for single-dose administration. Administer immediately after opening and discard any unused product 2.3 Directions for Use Vials Draw ProHance into the syringe immediately before use. Do not pierce the rubber stopper more than once. Discard any unused vial contents. ProHance single dose syringe* Screw the threaded tip of the plunger rod clockwise into the cartridge plunger and push forward a few millimeters to break any friction between the cartridge plunger and syringe barrel Holding syringe erect, unscrew the plastic tip cap from the tip of the syringe and attach either a sterile, disposable needle or tubing with a compatible Luer lock using a push-twist action (slip tip) Hold the syringe erect and push plunger forward until all of the air is evacuated and fluid either appears at the tip of the needle or the tubing is filled Following the usual aspiration procedure, complete the injection Inject at least a 5 mL normal saline flush immediately after ProHance injection to ensure complete administration Properly dispose of the syringe and any other materials used *The syringe assembly is a HYPAK SCF® single dose syringe supplied by Becton Dickinson

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following serious adverse reactions are discussed in greater detail in other sections of the prescribing information: Nephrogenic systemic fibrosis [see Boxed Warning and Warnings and Precautions ( 5.2 )] Hypersensitivity reactions [see Contraindications ( 4 ) and Warnings and Precautions ( 5.3 )] The most commonly reported adverse reactions are nausea and taste perversion with an incidence ≥ 0.9% ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, Contact Bracco Diagnostics Inc. at 1-800-257-5181 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The adverse events described in this section were observed in clinical trials involving 3174 subjects (including 2896 adults and 278 pediatric subjects ages 0 to 17 years) exposed to ProHance. Approximately 48% of the subjects were men and ethnic distribution was 78% Caucasian, 6% Black, 3% Hispanic, 6% Asian, and 2% other. In 5% of the subjects, race was not reported. Average age was 47 years (range from 1 day to 91 years) and the exposure ranged from 0.03 to 0.3 mmol/kg. Overall, approximately 5.8% of subjects reported one or more adverse reactions during a follow-up period that ranged from 24 hours to 7 days after ProHance administration. Table 2 lists adverse reactions that occurred in ≥ 0.4% subjects who received ProHance. Table 2: More frequent adverse reactions in clinical trials Reaction Rate (%) N = 3174 Nausea 1.4% Dysgeusia 0.9% Headache 0.7% Dizziness 0.4% Urticaria 0.4% The following additional adverse events occurred in fewer than 0.4% of the subjects: General disorders and administration site conditions: Asthenia; chest discomfort, facial edema, feeling hot, injection site coldness, injection site erythema, injection site pain, injection site warmth, pain, pyrexia Cardiac: Angina pectoris, palpitations, atrio-ventricular block first degree Ear and labyrinth disorders: Ear discomfort, tinnitus Eye disorders: Eye pruritis, lacrimation increased Gastrointestinal disorders: Abdominal discomfort, abdominal pain, diarrhea, dry mouth, gingival pain, oral pruritis, swollen tongue, vomiting Infections and infestations: Gingivitis, rhinitis Investigations: Alanine aminotransferase increased, aspartate aminotransferase increased, blood chloride increased, blood pressure immeasurable, blood urea decreased, hemoglobin decreased, heart rate increased Metabolism and nutrition disorders: Decreased appetite, hypoglycemia Musculoskeletal and connective tissue disorders: Back pain, musculoskeletal stiffness Nervous system disorders: Formication, hypoesthesia, hypokinesia, lethargy, loss of consciousness, migraine, paresthesia, presyncope, seizure, syncope, taste disorder Psychiatric disorders: Anxiety, mental status changes Respiratory, thoracic and mediastinal disorders: Cough, dry throat, dyspnea, nasal discomfort, throat irritation Skin and subcutaneous tissue disorders: Hyperhidrosis, pruritis, rash, rash morbilliform Vascular disorders: Flushing, hypotension, peripheral coldness, vascular rupture, vasodilatation, vasospasm 6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of ProHance or other GBCAs that were not observed in the clinical trials. 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. * Cases of acute renal failure have been reported in patients with pre-existing severe renal impairment. The following adverse drug reactions have also been reported: General Disorders and Administration Site Conditions: Adverse events with variable onset and duration have been...

Contraindications

4 CONTRAINDICATIONS ProHance is contraindicated in patients with known allergic or hypersensitivity reactions to ProHance [see Warnings and Precautions ( 5.3 )]. Allergic or hypersensitivity reactions to ProHance ( 4 )

Pregnancy and Breastfeeding

8.1 Pregnancy Risk Summary GBCAs cross the placenta and result in fetal exposure and gadolinium retention. The human data on the association between GBCAs and adverse fetal outcomes are limited and inconclusive (see Data). Because of the potential risks of gadolinium to the fetus, use ProHance only if imaging is essential during pregnancy and cannot be delayed. In animal reproduction studies in rats, gadoteridol doubled the incidence of post-implantation loss at up to 16 times the recommended human dose (RHD). There were no adverse developmental effects observed in rabbits with intravenous administration of gadoteridol during organogenesis at doses up to 19 times the recommended human dose of 0.1 mmol/kg (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 risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and is 15 to 20%, respectively. Data Human Data Contrast agent is visualized in the placenta and fetal tissues after maternal GBCA administration. Cohort studies and case reports on exposure to GBCAs during pregnancy have not reported a clear association between GBCAs and adverse effects in the exposed neonates. However, a retrospective cohort study, comparing pregnant women who had a GBCA MRI to pregnant women who did not have an MRI, reported a higher occurrence of stillbirths and neonatal deaths in the group receiving GBCA MRI. Limitations of this study include a lack of comparison with non-contrast MRI and lack of information about the maternal indication for MRI. Animal Data Gadolinium Retention GBCAs administered to pregnant non-human primates (0.1 mmol/kg on gestational days 85 and 135) result in measurable gadolinium concentration in the offspring in bone, brain, skin, liver, kidney, and spleen for at...

Overdosage

10 OVERDOSAGE Clinical consequences of overdose with ProHance have not been reported. The safety of ProHance has been tested in clinical studies using doses up to 0.3 mmol/kg and no clinical consequences related to increasing dose have been observed to date. ProHance can be removed by hemodialysis [see Use in Specific Populations ( 8.6 ) and Clinical Pharmacology ( 12.3 )] .

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied ProHance is supplied as a sterile, nonpyrogenic, and colorless to slightly yellow solution containing 279.3 mg/mL (0.5 mmol/mL) of gadoteridol in single-dose rubber stoppered vials or prefilled syringes; ProHance is available in boxes of: Five 5 mL fills in single dose 15 mL vials (NDC 0270-1111-04) Five 10 mL fills in single dose 30 mL vials (NDC 0270-1111-01) Five 15 mL fills in single dose 30 mL vials (NDC 0270-1111-02) Five 20 mL fills in single dose 30 mL vials (NDC 0270-1111-03) Storage and Handling Store at 25°C (77° F). Excursions permitted to 15°C to 30°C (59°F to 86°F) [See USP Controlled Room Temperature]. Protect from light. DO NOT FREEZE. Should freezing occur in the vial, ProHance should be brought to room temperature before use. If allowed to stand at room temperature for a minimum of 60 minutes, ProHance should return to a clear, colorless to slightly yellow solution. Before use, examine the product to assure that all solids are redissolved and that the container and closure have not been damaged. Should solids persist, discard vial.

About This Information

This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.

What are side effects?

Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.

What are drug interactions?

Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.