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Drug Safety-related Labeling Changes (SrLC)

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CONRAY (NDA-013295)

(IOTHALAMATE MEGLUMINE)

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

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04/26/2023 (SUPPL-73)

Approved Drug Label (PDF)

5 Warnings and Precautions

WARNINGS

Thyroid Dysfunction in Pediatric Patients 0 to 3 Years of Age:

Thyroid dysfunction characterized by hypothyroidism or transient thyroid suppression has been reported after both single exposure and multiple exposures to iodinated contrast media (ICM) in pediatric patients 0 to 3 years of age.

Younger age, very low birth weight, prematurity, underlying medical conditions affecting thyroid function, admission to neonatal or pediatric intensive care units, and congenital cardiac conditions are associated with an increased risk of hypothyroidism after ICM exposure. Pediatric patients with congenital cardiac conditions may be at the greatest risk given that they often require high doses of contrast during invasive cardiac procedures.

An underactive thyroid during early life may be harmful for cognitive and neurological development and may require thyroid hormone replacement therapy. After exposure to ICM, individualize thyroid function monitoring based on underlying risk factors, especially in term and preterm neonates.

PRECAUTIONS

Pediatric Use

…

After exposure to iodinated contrast media, individualize thyroid function monitoring in pediatric patients 0 to 3 years of age based on underlying risk factors, especially in term and preterm neonates (see WARNINGS and ADVERSE REACTIONS).

02/18/2022 (SUPPL-72)

Approved Drug Label (PDF)

5 Warnings and Precautions

PRECAUTIONS

Information for Patients

Newly added information:

7. Advise parents/caregivers about the risk of developing thyroid dysfunction after Conray administration. Advise parents/caregivers about when to seek medical care for their child to monitor for thyroid dysfunction (see WARNINGS).

Pediatric Use

Newly added information:

Thyroid function tests indicative of thyroid dysfunction, characterized by hypothyroidism or transient thyroid suppression have been uncommonly reported following iodinated contrast media administration in pediatric patients, including term and preterm neonates; some patients were treated for hypothyroidism. Monitor pediatric patients 0 to 3 years of age closely, particularly those with one or more potential risk factors, for thyroid dysfunction (see WARNINGS and ADVERSE REACTIONS).

WARNINGS

Newly added information:

Thyroid Dysfunction in Pediatric Patients 0 to 3 Years of Age: Thyroid dysfunction characterized by hypothyroidism or transient thyroid suppression has been reported after both single exposure and multiple exposures to iodinated contrast media. Among patients 0 to 3 years of age exposed to iodinated contrast media, thyroid dysfunction has been reported in 1% to 15% depending on the age of the patient and the dose of the iodinated contrast agent.

Younger age, very low birth weight, prematurity, and the presence of other conditions, such as, admission to neonatal or pediatric intensive care units, and cardiac conditions are associated with an increased risk. Pediatric patients with cardiac conditions may be at the greatest risk given that they often require high doses of contrast during invasive cardiac procedures, such as catheterization and computed tomography (CT).

Pediatric patients 0 to 3 years of age warrant closer monitoring because an underactive thyroid during early life may be harmful for motor, hearing, and cognitive development and may require transient T4 replacement therapy. Evaluate thyroid function in all pediatric patients 0 to 3 years of age within 3 weeks following exposure to iodinated contrast media, especially in term and preterm neonates. If thyroid dysfunction is detected, treat and monitor thyroid function as clinically needed.

6 Adverse Reactions

Additions and/or revisions underlined:

Endocrine reactions: Hyperthyroidism, hypothyroidism

04/05/2017 (SUPPL-70)

Approved Drug Label (PDF)

4 Contraindications

(new section added)

Refer to PRECAUTIONS, General, concerning hypersensitivity. Conray should not be used for myelography. Arthrography should not be performed if infection is present in or near the joint. Percutaneous transhepatic cholangiography is contraindicated in patients with coagulation defects and prolonged prothrombin times. Endoscopic retrograde cholangiopancreatography is contraindicated during an acute attack of pancreatitis or during severe clinically evident cholangitis and in patients in whom endoscopy is prohibited.

5 Warnings and Precautions

PRECAUTIONS

General

…

General anesthesia may be indicated in the performance of some procedures in young or uncooperative children and in selected adult patients; however, a higher incidence of adverse reactions has been reported in these patients. This may be attributable to the inability of the patient to identify untoward symptoms, or to the hypotensive effect of anesthesia, which can prolong the circulation time and increase the duration of contact of the contrast agent.

WARNINGS

(Additions and/or revisions underlined)

…

SEVERE ADVERSE EVENTS – INADVERTENT INTRATHECAL ADMINISTRATION:

Acute renal failure has been reported in diabetic patients with diabetic nephropathy and in susceptible non-diabetic patients (often elderly with pre-existing renal disease) following the administration of iodinated contrast agents. Therefore, careful consideration of the potential risks should be given before performing this radiographic procedure in these patients.

Caution should be exercised in performing contrast medium studies in patients with endotoxemia and/or those with elevated body temperatures.

…

Severe Cutaneous Adverse Reactions: Severe cutaneous adverse reactions (SCAR)may develop from 1 hour to several weeks after intravascular contrast agentadministration. These reactions include Stevens-Johnson syndrome and toxic and drug reaction with eosinophilia and systemic symptoms (DRESS). Reaction severity may increase and time to onset may decrease with repeat administration of contrast agent; prophylactic medications may not prevent or mitigate severe cutaneous adverse reactions. Avoid administering Conray to patients with a history of a severe cutaneous adverse reaction to Conray.

6 Adverse Reactions

(addition underlined)

…

Skin and Subcutaneous Tissue Disorders: Reactions range from mild (e.g. rash, erythema, pruritus, urticaria and skin discoloration) to severe: [e.g. Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS/TEN), acute generalized exanthematous pustulosis (AGEP) and drug reaction with eosinophilia and systemic symptoms (DRESS)].

8 Use in Specific Populations

Pregnancy Category B

(subsection added)

Reproduction studies have been performed in mice, rats, and rabbits at doses up to6.6 times the human dose and have revealed no evidence of impaired fertility or harm to the fetus due to Conray. There are, however, no adequate and well controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

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

Information for Patients

(addition underlined)

Patients receiving iodinated intravascular contrast agents should be instructed to:

 

1. Inform your physician if you are pregnant.

2. Inform your physician if you are diabetic or if you have multiple myeloma, pheochromocytoma, homozygous sickle cell disease or known thyroid disease.

3. Inform your physician if you are allergic to any drugs, food or if you had any reactions to previous injections of dyes used for x-ray procedures.

4. Inform your physician about any other medications you are currently taking, including non-prescription drugs.

5. Consult with your physician if, at some future date, any thyroid tests are planned. The iodine in this agent may interfere with later thyroid tests.

6.  Advise patients to inform their physician if they develop a rash after receiving

Conray.