As with all therapeutic peptides, there is a potential for immunogenicity with ZEGALOGUE. The detection of antibody formation is highly dependent on the sensitivity and specificity of the assay. Additionally, the observed incidence of antibody (including neutralizing antibody) positivity in an assay may be influenced by several factors including assay methodology, sample handling, timing of sample collection, concomitant medications, and underlying disease. For these reasons, comparison of the incidence of antibodies to ZEGALOGUE with the incidence of antibodies to other products may be misleading.
In clinical trials, 4/498 (<1%) of ZEGALOGUE-treated patients developed treatment-emergent anti-drug antibodies (ADAs). Two patients receiving a single dose of ZEGALOGUE had detectable ADAs to dasiglucagon for at least 14 months after dosing. One ADA-positive patient receiving multiple doses of ZEGALOGUE had ADAs with transient neutralizing activity and with cross-reactivity against native glucagon. Although no safety or efficacy concerns were noted for these ADA-positive subjects, it is unknown whether ADAs may affect pharmacokinetics, pharmacodynamics, safety, and/or effectiveness of the drug [see Clinical Studies (14)] .
|Clinical Impact:||Patients taking beta-blockers may have a transient increase in pulse and blood pressure when given ZEGALOGUE.|
|Clinical Impact:||In patients taking indomethacin, ZEGALOGUE may lose its ability to raise blood glucose or may even produce hypoglycemia.|
|Clinical Impact:||ZEGALOGUE may increase the anticoagulant effect of warfarin.|
There are no available data on dasiglucagon use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.
Untreated hypoglycemia in pregnancy can cause complications and may be fatal.
In animal reproduction studies, daily subcutaneous administration of dasiglucagon to pregnant rabbits and rats during the period of organogenesis did not cause adverse developmental effects at exposures 7 and 709 times the human dose of 0.6 mg based on AUC, respectively (see Data) .
In an embryo-fetal development study, pregnant rats were treated daily with subcutaneous doses of 2, 10, and 24 mg/kg/day during the period of organogenesis (gestation day 6 to 17). Maternal toxicity, in terms of decreased body weight gain, lower fetal body weight, and delayed bone ossification, was observed at ≥10 mg/kg/day (≥475 times the human dose, based on AUC).
In an embryo-fetal development study, pregnant rabbits were treated daily with subcutaneous doses of 0.1, 0.3, and 1 mg/kg/day during the period of organogenesis (gestation day 6 to 19). Lower fetal body weight and delayed bone ossification were observed at 1 mg/kg/day (100 times the human dose, based on AUC), a dose that also induced maternal toxicity in terms of decreased body weight gain. At ≥0.3 mg/kg/day (≥20 times the human dose), dasiglucagon caused fetal skeletal and visceral malformations. No adverse fetal developmental effects were observed at 0.1 mg/kg/day, corresponding to exposure 7 times the human dose.
There is no information on the presence of dasiglucagon in either human or animal milk, or the effects of the drug on the breastfed infant or milk production. Dasiglucagon is a peptide and would be expected to be broken down to its constituent amino acids in the infant’s digestive tract and is therefore unlikely to cause harm to an exposed infant.
The safety and effectiveness of ZEGALOGUE for the treatment of severe hypoglycemia in patients with diabetes have been established in pediatric patients aged 6 years and above. Use of ZEGALOGUE for this indication is supported by evidence from a study in 42 pediatric patients with type 1 diabetes [see Clinical Studies (14.2)] .
The safety and effectiveness of ZEGALOGUE have not been established in pediatric patients younger than 6 years of age.
Clinical studies of ZEGALOGUE included too few patients 65 years of age and older to determine whether these patients respond differently from younger adult patients.
If overdosage occurs, the patient may experience nausea, vomiting, inhibition of GI tract motility, and/or increases in blood pressure and heart rate. In case of suspected overdosing, serum potassium may decrease and should be monitored and corrected if needed. If the patient develops a marked increase in blood pressure, phentolamine mesylate has been shown to be effective in lowering blood pressure for the short time that control would be needed.
Appropriate supportive treatment should be initiated according to the patient’s clinical signs and symptoms.
ZEGALOGUE contains dasiglucagon hydrochloride, which is a glucagon analog and an antihypoglycemic agent. Dasiglucagon is comprised of 29 amino acids. The molecular formula of dasiglucagon (anhydrous, free-base) is C 152 H 222 N 38 O 50 , and its molecular mass is 3382 g/mol (anhydrous, free-base). Dasiglucagon hydrochloride has the following chemical structure:
ZEGALOGUE injection is a preservative free, sterile, aqueous, clear, and colorless solution for subcutaneous use in a single-dose prefilled syringe and an autoinjector. Each prefilled syringe and autoinjector contains 0.63 mg of dasiglucagon provided as dasiglucagon hydrochloride, which is a salt with 3 — 5 equivalents of hydrochloride, and contains the following inactive ingredients: 3.82 mg tromethamine, 6.44 mg sodium chloride, and water for injection. Hydrochloric acid and/or sodium hydroxide may have been added to adjust pH to 6.5.
Dasiglucagon is a glucagon receptor agonist, which increases blood glucose concentration by activating hepatic glucagon receptors, thereby stimulating glycogen breakdown and release of glucose from the liver. Hepatic stores of glycogen are necessary for dasiglucagon to produce an antihypoglycemic effect.
After administration of ZEGALOGUE in adult patients with type 1 diabetes, the mean glucose increase from baseline at 90 minutes was 168 mg/dL (Figure 1).
Figure 1 Mean plasma glucose over time in adults with type 1 diabetes administered 0.6 mg dasiglucagon
In pediatric patients (7 to 17 years) with type 1 diabetes, the mean glucose increase at 60 minutes after administration of ZEGALOGUE was 162 mg/dL (Figure 2).
Figure 2 Mean plasma glucose over time in pediatric patients with type 1 diabetes administered 0.6 mg dasiglucagon
At a dose resulting in more than 5 times the concentration achieved with the recommended therapeutic dose, ZEGALOGUE does not prolong the QT interval to any clinically relevant extent.
All MedLibrary.org resources are included in as near-original form as possible, meaning that the information from the original provider has been rendered here with only typographical or stylistic modifications and not with any substantive alterations of content, meaning or intent.