Publications by authors named "Tachdjian R"

Hereditary angioedema (HAE) is a complex disorder with a wide array of treatment options. Shared decision-making (SDM) should be used to ensure that patients are choosing their best treatment option. The goal was to develop and psychometrically test a brief instrument for assessing the patient's perspective of the SDM process during his or her clinical encounters with an HAE specialist/allergist.

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Long-term prophylaxis (LTP) has been shown to reduce the frequency of hereditary angioedema (HAE) attacks; however, attacks occurring in patients receiving LTP have not been well characterized. The objective of this systematic review was to evaluate the proportion of type I/II HAE (HAE-C1INH) patients who experience attacks while receiving LTP, the characteristics of these attacks, and associated on-demand therapy use. A systematic search was conducted in PubMed to identify studies reporting LTP use with plasma-derived C1 inhibitor (pdC1INH), lanadelumab, berotralstat, androgens, or antifibrinolytics in patients with HAE-C1INH.

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Article Synopsis
  • * A survey of 144 HAE patients showed that those receiving lanadelumab experienced fewer attacks and reported a better quality of life compared to those on other long-term therapies.
  • * The findings indicate that patients treated with lanadelumab not only had lower attack frequency but also faced a lower symptomatic impact, suggesting it may be a more effective treatment option.
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Background: Lanadelumab was well tolerated and effective in preventing hereditary angioedema (HAE) attacks in the phase 3, double-blind, placebo-controlled Hereditary angioEdema Long-term Prophylaxis (HELP) study and subsequent HELP open-label extension (OLE) study (NCT02741596).

Objective: To evaluate outcomes from HELP OLE for adolescent patients aged 12 to 17 years.

Methods: The HELP OLE study comprised patients who completed the HELP study (rollovers) and new eligible (lanadelumab-naive) patients.

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Background: Hereditary angioedema is a rare disorder characterized by episodic, potentially life-threatening swelling caused by kallikrein-kinin dysregulation. Long-term prophylaxis can stabilize this system. Donidalorsen, an antisense oligonucleotide, specifically reduces prekallikrein expression.

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Objectives: Music is helpful to young people in healthcare contexts, but less is known about the acceptability of music-based interventions for youth living at home with chronic pain who may be struggling to attend school and participate in social activities. The Songs of Love (SOL) foundation is a national nonprofit organization that creates free, personalized, original songs for youth facing health challenges. The aims of this study were (1) to assess acceptability of SOL from the perspective of youth with chronic pain receiving a song and singer-songwriters who created the songs, and (2) to explore the role of music more generally in the lives of young people living with pain.

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Hereditary angioedema (HAE) is a rare condition marked by swelling episodes in various body parts, including the extremities, upper airway, face, intestinal tract, and genitals. Long-term prophylaxis (LTP), prescribed to control recurring HAE attacks, is integral to its management. Previously, attenuated androgens (AAs) were the only oral LTP options.

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Background: Berotralstat is a first-line, once-daily oral plasma kallikrein inhibitor approved for prophylaxis of hereditary angioedema (HAE) attacks in patients 12 years or older.

Objective: This analysis examined the safety and effectiveness of long-term prophylaxis with berotralstat.

Methods: APeX-2 was a phase 3, parallel-group, multicenter trial in patients with HAE caused by C1-inhibitor deficiency (NCT03485911).

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Background: Real-world data on subcutaneous C1INH (C1INH[SC]) usage and patient-level impacts on hereditary angioedema (HAE)-related outcomes and quality of life (QoL) are both lacking and challenging to generate using conventional study methodologies. Using a hybrid study design involving patient interviews supplemented by retrospective medical chart data review, we conducted a real-world assessment of the impact of C1INH(SC) prophylaxis on HAE attack patterns, QoL, and on-demand medication use.

Methods: The study was conducted at seven US sites and included 36 adults with HAE who had been treated with C1INH(SC) long-term prophylaxis following ≥ 12 months of on-demand management only.

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Background: Hereditary angioedema (HAE) is a potentially fatal disease characterized by unpredictable, recurrent, often disabling swelling attacks. In a randomized phase 2 study, donidalorsen reduced HAE attack frequency and improved patient quality-of-life (ISIS721744-CS2, NCT04030598). We report the 2-year interim analysis of the phase 2 open-label extension (OLE) study (ISIS 721744-CS3, NCT04307381).

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Article Synopsis
  • Hereditary angioedema (HAE) leads to unpredictable swelling episodes, and this study assesses the treatment burden linked to on-demand therapies by examining adverse drug reactions (ADRs) reported to the FDA.
  • The analysis of the FAERS database from 2009 to 2022 focused on four FDA-approved HAE therapies, categorizing ADRs into 18 domains to identify trends in administration-site reactions.
  • The findings indicated that plasma-derived C1-inhibitor (pdC1-INH) had the highest reports of injection-site issues, while recombinant C1-inhibitor (rhC1-INH) was unique for reporting access-site complications, suggesting consistency with clinical trial data on treatment side effects.
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Hereditary angioedema (HAE) is a rare autosomal-dominant disorder; most cases are characterized by low plasma levels of C1 esterase inhibitor (C1-INH). Clinical manifestations of HAE due to C1-INH deficiency include unpredictable, acute, recurrent episodes of nonpruritic swelling that can affect the face, trunk, limbs, and the respiratory, gastrointestinal, and genitourinary tracts. Attacks can be disfiguring, disabling, painful, and even life-threatening if laryngeal swelling occurs.

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Background: Hereditary angioedema is a rare and potentially life-threatening genetic disease that is associated with kallikrein-kinin system dysregulation. Garadacimab (CSL312), a novel, fully-human monoclonal antibody that inhibits activated factor XII (FXIIa), is being studied for the prevention of hereditary angioedema attacks. The aim of this study was to evaluate the efficacy and safety of once-monthly subcutaneous administrations of garadacimab as prophylaxis for hereditary angioedema.

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Hereditary angioedema (HAE) is a rare, autosomal disorder that manifests with unpredictable episodes of severe swelling of the skin and mucous membranes. These attacks can be highly disfiguring and range in severity from mild to-in cases of airway swelling-life-threatening. Fluctuations in female sex hormones-such as the changes that occur during puberty, menses, contraceptive use, pregnancy, and menopause-can all affect the frequency and severity of HAE attacks.

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Background: Hereditary angioedema is characterized by recurrent and unpredictable swellings that are disabling and potentially fatal. Selective inhibition of plasma prekallikrein production by antisense oligonucleotide treatment (donidalorsen) may reduce the frequency of attacks and the burden of disease.

Methods: In this phase 2 trial, we randomly assigned, in a 2:1 ratio, patients with hereditary angioedema with C1 inhibitor deficiency to receive four subcutaneous doses of either donidalorsen (80 mg) or placebo, with one dose administered every 4 weeks.

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A clinical vignette illustrates a typical presentation of a patient seeking help for acute angioedema. Despite the risks of SARS-CoV-2 (COVID-19) exposure, it is critical to evaluate patients with acute angioedema in person, because there is always the potential for angioedema to progress to the head, neck, or lungs, which can rapidly compromise the airways and require immediate intervention to avoid potential asphyxiation. There are three mediators of angioedema, histamine, leukotriene, or bradykinin, each requiring different management.

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Article Synopsis
  • Berotralstat (BCX7353) is an oral medication under investigation for preventing hereditary angioedema (HAE) attacks, aimed at assessing its efficacy and safety over a 24-week study (APeX-2 trial).
  • The trial involved 121 patients who were randomly assigned to receive either a daily dose of 110 mg or 150 mg of berotralstat, or a placebo, with the primary goal of measuring the frequency of HAE attacks.
  • Results indicated that both doses of berotralstat significantly reduced attack rates compared to placebo, with minimal side effects, and the higher 150 mg dosage showed the best safety profile.
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  • The study examines how hereditary angioedema (HAE) affects dental care behaviors and perceptions among patients with the condition compared to those without.
  • Findings show that fewer HAE patients visit the dentist regularly, even when they have dental insurance, likely due to concerns about potential angioedema attacks triggered by procedures.
  • Additionally, HAE patients who experience more frequent swelling after dental work tend to have longer intervals between dental visits and use specialized oral hygiene products more often.
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There is limited real-world evidence on hereditary angioedema (HAE) patient characteristics and health-care resource utilization (HCRU); in addition, pediatric patients have been described in small cohorts. To describe patient characteristics, treatment patterns, and HCRU among adult and pediatric patients treated for HAE in a large U.S.

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Article Synopsis
  • Bullous pemphigoid (BP) is a rare blistering skin condition often treated with corticosteroids, but a 74-year-old woman showed significant improvement with omalizumab instead.
  • After starting omalizumab, she experienced reduced pain and accelerated healing within a week, although she did develop mild dermatitis near the injection sites that resolved quickly.
  • After 28 months, she has tolerated the treatment well without recurring skin reactions, indicating that omalizumab may be a promising option for BP, though more research is needed to understand its effects.
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Importance: Current treatments for long-term prophylaxis in hereditary angioedema have limitations.

Objective: To assess the efficacy of lanadelumab, a fully human monoclonal antibody that selectively inhibits active plasma kallikrein, in preventing hereditary angioedema attacks.

Design, Setting, And Participants: Phase 3, randomized, double-blind, parallel-group, placebo-controlled trial conducted at 41 sites in Canada, Europe, Jordan, and the United States.

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