Hereditary angioedema with C1-esterase-inhibitor deficiency

Active Ingredient: Conestat alfa

Indication for Conestat alfa

Population group: only adults (18 - 65 years old)

Conestat alfa is indicated for treatment of acute angioedema attacks in adults with hereditary angioedema (HAE) due to C1 esterase inhibitor deficiency.

For this indication, competent medicine agencies globally authorize below treatments:

50 U/kg

Route of admnistration

Intravenous

Defined daily dose

50 - 50 [iU] per kg of body weight

Dosage regimen

From 50 To 50 [iU] per kg of body weight once every day

Detailed description

Body weight up to 84 kg:

  • One intravenous injection of 50 U/kg body weight.

Body weight of 84 kg or greater:

  • One intravenous injection of 4,200 U.

In the majority of cases, a single dose of conestat alfa is sufficient to treat an acute angioedema attack. In case of an insufficient clinical response, an additional dose (50 U/kg body weight up to 4,200 U) can be administered at the discretion of the physician.

  • In adults and adolescents an additional dose may be administered if the patient has not responded adequately after 120 minutes.
  • In children an additional dose may be administered if the patient has not responded adequately after 60 minutes. Not more than two doses should be administered within 24 hours.

Dose calculation

Determine the patient’s body weight.

Body weight up to 84 kg:

  • For patients up to 84 kg calculate the volume required to be administered according to the formula below:

Volume to be administered (ml) = body weight (kg) times 50 (U/kg) / 150 (U/ml) = body weight (kg) / 3

Body weight of 84 kg or greater:

  • For patients of 84 kg or above the volume required to be administered is 28 ml, corresponding to 4,200 U.

Active ingredient

Conestat alfa

Conestat alfa, a recombinant human complement component 1 (C1) esterase inhibitor (rhC1-INH), is an analogue of human C1-INH and is obtained from the milk of rabbits expressing the gene coding for human C1-INH. C1-INH exerts an inhibitory effect on several proteases (target proteases) of the contact and complement systems.

Read more about Conestat alfa

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