Please select the eligibility criteria that correspond to the clinical trial below.
Title: HELP Study: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Efficacy and Safety Study to Evaluate DX-2930 For Long-Term Prophylaxis Against Acute Attacks of Hereditary Angioedema (HAE)
Brief Summary: This is a phase 3, multicenter, randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of DX-2930 in preventing acute angioedema attacks in patients with Type I and Type II HAE.


Options:
A: Inclusion Criteria:

* Be ≥12 years of age.
* Have a confirmed diagnosis of Hereditary Angioedema.

Exclusion Criteria:

* Receipt of any C1 inhibitor (C1 INH) therapy or any blood products for treatment or prevention of an angioedema attack within 7 days before the first dose of study drug.
* Be receiving prophylactic intravenous CINRYZE that exceeds 1000 units every 3 or 4 days (maximum weekly dose 2000 units).
* Have received any androgen therapy (e.g., danazol, oxandrolone, stanozolol, testosterone) within 7 days prior to the first dose of study drug.
* If female, have started taking or changed the dose of any hormonal contraceptive regimen or hormone replacement therapy (i.e., estrogen/progestin containing products) within 3 months prior to the first dose of study drug.
* History of allergic reaction to C1 INH products, including CINRYZE or other blood products.
* History of abnormal blood clotting.
* Have a known allergy to hyaluronidase or any other ingredient in the study formulation.
B: Key Inclusion Criteria:

* A clinical diagnosis of hereditary angioedema Type 1 or Type 2, defined as having a C1-INH functional level and a C4 level below the lower limit of the normal (LLN) reference range, as assessed during the Screening period.
* Subject weight of ≥ 40 kg
* Access to and ability to use one or more acute medications approved by the relevant competent authority for the treatment of acute attacks of HAE
* Subjects must be medically appropriate for on-demand treatment as the sole medicinal management for their HAE during the study.
* Subjects must have a specified number of investigator-confirmed attacks during the run-in period of a maximum of 56 days from the Screening visit.
* Acceptable effective contraception
* Written informed consent

Key Exclusion Criteria:

* Pregnancy or breast-feeding
* Any clinically significant medical condition or medical history that, in the opinion of the Investigator or Sponsor, would interfere with the subject's safety or ability to participate in the study
* Any laboratory parameter abnormality that, in the opinion of the Investigator, is clinically significant and relevant for this study
* Severe hypersensitivity to multiple medicinal products or severe hypersensitivity/ anaphylaxis with unclear etiology
* Use of C1-INH within 14 days or use of androgens or tranexamic acid within 28 days prior to the Screening visit for prophylaxis of HAE attacks, or initiation of these drugs during the study
* Current participation in any other investigational drug study or received another investigational drug within 30 days of the Screening visit
* Prior enrollment in a BCX7353 study
C: Inclusion Criteria:

* Males and females 12 years of age or older at time of screening
* Documented diagnosis of HAE, Type I or II
* Baseline rate of at least 1 Investigator-confirmed HAE attack per 4 weeks
* Adult subjects and caregivers of subjects under the age of 18 are willing and able to read, understand, and sign an informed consent form. Subjects age 12 to 17, whose caregiver provides informed consent, are willing and able to read, understand an dsign an assent form.
* Males and femailes who are fertile and sexually active must adhere to contraception requirements.

Exclusion Criteria:

* Concomitant diagnosis of another form of chronic, recurrent angioedema, such as acquired angioedema, idiopathic angioedema, or recurrent angioedema associated with urticaria.
* Participation in a prior DX-2930 study
* Treatment with any other investigational drug or exposure to an investigational device within 4 weeks prior screening
* Exposure to angiotensin-converting enzyme (ACE) inhibitors or any estrogen-containing medications within 4 weeks prior to screening.
* Exposure to androgens within 2 weeks prior to entering the run-in period.
* Use of long-term prophylactic therapy for HAE within 2 weeks prior to entering the run-in period.
* Use of short-term prophylaxis for HAE within 7 days prior to entering the run-in period.
* Any of the following liver function test abnormalities: alanine aminotransferase (ALT) \> 3x upper limit of normal, or aspartate aminotransferase (AST) \> 3x upper limit of normal, or total bilirubin \> 2x upper limit of normal (unless the bilirubin elevation is a result of Gilbert's syndrome).
* Pregnancy or breastfeeding.
D: Inclusion Criteria:

* Male or female
* Aged ≥ 18 to ≤ 65 years
* A diagnosis of C1-INH HAE or FXII/PLG HAE;
* For subjects with C1-INH HAE: ≥ 4 HAE attacks over a consecutive 2-month period during the 3 months before Screening, as documented in the subject's medical record.

Exclusion Criteria:

* History of clinically significant arterial or venous thrombosis, or current clinically significant prothrombotic risk
* History of an uncontrolled, abnormal bleeding event due to a coagulopathy, or a current clinically significant coagulopathy or clinically significant risks for bleeding events
* Known incurable malignancies

Answer: C