Infergen (Interferon Alfacon-1) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

Pill Identifier Search

May 26, 2012

Infergen

Hepatitis C »

Hepatitis C infection facts

HCV is one of several viruses that cause hepatitis (inflammation of the liver).
Up to 85% of individuals who are initially (acutely) infected with HCV will fail to eliminate the virus and will become chronically infected.
HCV is spread most commonly through inadvertent exposure to infected blood. Intravenous drug abuse is the most common mode of transmission. The risk of acquiring HCV through sexual contact is low.
Generally, patients do not develop symptoms of chronic infection with HCV until they have extensive scarring of the liver (cirrhosis). Some individuals, however, may have fatigue and other non-specific symptoms in the absence of cirrhosis. A minority of patients with HCV have symptoms from organs outside of the liver.
In the U.S., Infection with HCV is the most common cause of chronic hepatitis and the most common reason for liver transplantation.
...

Read the Hepatitis C article »

« Previous
1
2
3
4
5
6
7
8
9
10
Next »

Infergen

Hepatitis Slideshow Pictures

Digestive Disease Myths Slideshow Pictures

Infectious Mononucleosis Slideshow Pictures

font size

INFERGEN
(interferon alfacon-1) injection for subcutaneous use

WARNING

FATAL OR LIFE-THREATENING DISORDERS

Alpha interferons, including INFERGEN (interferon alfacon-1) , cause or aggravate fatal or life-threatening neuropsychiatric, autoimmune, ischemic, and infectious disorders. Patients should be monitored closely with periodic clinical and laboratory evaluations. Patients with persistently severe or worsening symptoms of these conditions should be withdrawn from therapy. In many but not all cases, these disorders resolve after stopping interferon alfacon-1 therapy. [see WARNINGS AND PRECAUTIONS and ADVERSE REACTIONS].

Use with Ribavirin: Ribavirin may cause birth defects and/or death of the unborn child. Extreme care must be taken to avoid pregnancy in female patients and in female partners of male patients. Ribavirin causes hemolytic anemia. The anemia associated with ribavirin therapy may result in a worsening of cardiac disease. Ribavirin is genotoxic and mutagenic and should be considered a potential carcinogen. [see WARNINGS AND PRECAUTIONS; and Ribavirin Full Prescribing Information].

DRUG DESCRIPTION

Interferon alfacon-1 is a wholly synthetic type-I interferon. The 166-amino acid sequence of interferon alfacon-1 was derived by scanning the sequences of several natural interferon alpha subtypes and assigning the most frequently observed amino acid in each corresponding position resulting in a consensus sequence. Four additional amino acid changes were made to facilitate the molecular construction, and a corresponding synthetic DNA sequence was constructed using chemical synthesis methodology. Interferon alfacon-1 differs from interferon alfa-2b at 19/166 amino acids (88% homology), and with Interferon alfa-2a at 18/166 amino acids (88% homology). Comparison with interferon-beta shows identity at over 30% of the amino acid positions. Interferon alfacon-1 is produced in Escherichia coli (E. coli) cells that have been genetically altered by insertion of a synthetically constructed sequence that codes for interferon alfacon-1. Prior to final purification, interferon alfacon-1 is allowed to oxidize to its native state, and its final purity is achieved by sequential passage over a series of chromatography columns. This protein has a molecular weight of 19,434 daltons.

INFERGEN (interferon alfacon-1) is a sterile, clear, colorless, preservative-free liquid formulated with 100 mM sodium chloride and 27 mM sodium phosphate at pH 7.0 ± 0.2. The product is available in single-use vials containing 9 mcg and 15 mcg interferon alfacon-1 at a fill volume of 0.3 mL and 0.5 mL, respectively. INFERGEN vials contain 0.03 mg/mL interferon alfacon-1, sodium chloride (5.9 mg/mL), and sodium phosphate (3.8 mg/mL) in Water for Injection, USP. INFERGEN (interferon alfacon-1) is to be administered undiluted by subcutaneous injection.

What are the possible side effects of interferon alfacon-1 (Infergen)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using interferon alfacon-1 and call your doctor at once if you have a serious side effect such as: