Probiotics and Corticosteroids for Treating Periodic Fever, Aphthous Stomatitis, Pharyngitis, Cervical Adenitis (PFAPA) (PFAPA)

Effects of Probiotic Addition to Corticosteroid Treatment for PFAPA

The purpose of study is to see if adding probiotics to corticosteroid treatment for children with PFAPA could improve the health and daily of patients through reduction in febrile period frequency and length, along with concomitant reduction of associated symptoms. Current standard of care incorporates the administration of corticosteroids; however, while limiting the symptoms associated with PFAPA, corticosteroid use has been shown to increase the frequency at which these symptoms occur. Investigators hypothesize that administration of probiotics along with corticosteroids will work to decrease the frequency at which the febrile episodes occur. Additionally, probiotics may decrease the maximal fever experienced during these episodes, amount of corticosteroid needed to control the symptoms, average length of the episodes, and the number of patients who ultimately undergo tonsillectomy due to unsuccessful treatment with medication.

Study Overview

• Status: Withdrawn
• Conditions: Pharyngitis; Aphthous Stomatitis; Periodic Fever; Cervical Adenitis
• Intervention / Treatment: Biological: Lactobacillus acidophilus and Bifidobacterium lactis; Other: Placebo

Detailed Description

Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) was first described in 1987 in a study of 12 pediatric patients. PFAPA is predominately considered a pediatric illness with onset typically occurring under the age of 5. This syndrome is characterized by periodic febrile episodes (39°C - 42°C) lasting an average of 4 days with recurrence approximately every 21-30 days. Patients classically exhibit at least one of three major associated symptoms; aphthous stomatitis, pharyngitis, or cervical adenitis. Between periods of fever, patients are asymptomatic and do not experience long-term deleterious effects on growth or development. Currently, the etiology of this syndrome is unknown but does not appear to be heritable or target specific populations.

Due to a lack of applicable diagnostic tests, the identification of PFAPA is predominantly dependent on patient history and physical examination. This methodology relies heavily upon clinical presentation of the patient's illness to rule out other causes of periodic fever. As a result of the unknown cause of PFAPA, there are several proposed treatment approaches available. Corticosteroids are the current standard of care; typically a single dose of prednisolone (1 mg/kg), given upon first signs of fever with a subsequent dose during the febrile period if necessary. Several studies have shown that administration of prednisolone was sufficient to abort the febrile episode. However, this treatment method typically results in a decrease in the healthy interval between fever reoccurrence. The reduction in fever allows for children to attend school and participate in other activates, but the increased frequency provides additional complications for children and parents.

Oral cimetidine, a histamine H-2 receptor agonist that results in reduced production of stomach acid, has also been used as possible treatment. This treatment has shown to inhibit febrile episodes, it was only effective in <30% of patients.

If medication therapy fails to resolve recurrent febrile episodes, the option of tonsillectomy presents a possible alternative. PFAPA syndrome was shown to resolve in the majority of patients, however this not preferred as a first line treatment due to the risks associated with surgery and general anesthesia.

Recently published literature suggests a potential new treatment for PFAPA targeting chemokines and proinflammatory cytokines. A possible method for the inhibition of cyclic inflammatory responses in PFAPA would be the exposure of patients to a safe level of continuous low-grade inflammation, resulting from an immune response. In previous studies investigating allergy and eczema relief in pediatric populations, it was shown that administration of probiotics induced elevated levels of inflammatory markers. These low level inflammatory responses resulted in no adverse effects and provided an immunologic activation benefit. Use of probiotics provides a previously unstudied approach to the treatment of PFAPA. Dr. Nicholas Bennett has also observed anecdotal evidence that patients who self-administered probiotics experienced relief of their PFAPA symptoms.

This is a randomized, prospective, double-blind, placebo-controlled study with the randomization being done by the research pharmacist using an equal randomization process, no stratification of patients. Dr. Bennett and other patient recruiters will remain blinded to the participant group assignment. The standard of care consists of corticosteroid dosing of 1 mg/kg of body weight given once at the onset of the febrile period, repeated once within 24 hours if necessary, but no more than two doses per cycle. The second dose of corticosteroid is only to be given within one day following the initial dosage if the fever persists. The investigational product will be administered daily for the duration of the study. For the investigational product patients will be instructed to take daily one sachet of the study product mixed into a 60 ml of water that is not hot. On days 90±7, 180±7 and 270±7 patients will come to the study site for re-supply of the probiotic and for evaluation of compliance. Throughout the 1-year followup period, parents will be asked to keep a journal to track corticosteroid usage, probiotic usage, additional medication usage, fever intensity, and associated symptoms. Standardized thermometers will be provided to ensure consistency. These journals will be collected and patient progress will be monitored at the standard care visits every three months. In addition, follow-up phone calls will be made monthly to assess progress and to address any concerns.

• Study Type: Interventional
• Phase: Phase 2

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 1 year to 12 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• diagnosis or confirmation of diagnosis of PFAPA from Dr. Bennett based on clinical or laboratory data
• is or will be undergoing treatment for PFAPA at CCMC
• agrees to the consent and, if necessary, assent forms
• is between 1 and 12 years of age

Exclusion Criteria:

• is currently taking another probiotic regularly (>=2 times/ week)
• is allergic to ingredients in the probiotic or placebo
• may react adversely to the probiotic due to any form of immune deficiency or chronic disease including pulmonary, renal, cardiac disorders including underlying structural heart disease, gastrointestinal disease, or diabetes
• is not a proficient English speaker
• does not agree to the consent and/or assent forms
• patients who use antibiotics or have used them within a month of the study start

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Corticosteriod + Probiotic Treatment; Corticosteroid dosing of 1 mg/kg of body weight given once at the onset of the febrile period, repeated once within 24 hours if necessary, but no more than two doses per cycle. The second dose of corticosteroid treatment is only to be given within one day following the initial dosage if the fever persists. Investigational drug (Intervention is Lactobacillus acidophilus and Bifidobacterium lactis): Patients will be instructed to take one sachet of the study product mixed into a 60 ml of water that is not hot. Each sachet will contain Lactobacillus acidophilus NCFM and Bifidobacterium lactis Bi-07 at a dose of 5*109 CFU of each strain. The investigational product will be taken daily for the duration of the study, which is a year.	Biological: Lactobacillus acidophilus and Bifidobacterium lactis; study product will be freeze dried and put into foil sachets; Other Names: HOWARU® Protect Kids
Placebo Comparator: Corticosteriod + PlaceboTreatment; Corticosteroid dosing of 1 mg/kg of body weight given once at the onset of the febrile period, repeated once within 24 hours if necessary, but no more than two doses per cycle. The second dose of corticosteroid treatment is only to be given within one day following the initial dosage if the fever persists. Placebo: will be taken daily and patients will be instructed to take one sachet of placebo mix into 60ml of water that is not to hot. The placebo will be taken daily for the duration of the study, which is one year. Placebo will be 1g of sucrose that has identical appearance, smell, and taste with the study product.	Other: Placebo; Placebo will look and taste like the investigational product. This also will be provided in a foil sachets

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Effects of the investigational treatment	Increased healthy intervals between cyclic febrile episodes in patients with PFAPA compared to patients being solely treated with corticosteroids.	Time to event: number of fever-free days will be calculated, as well as the average number of days between fever cycles from baseline to end of study which is 12 months.
Safety of the investigational treatment - reported descriptively as percentages of patients experiencing adverse and serious adverse events.	Safety will be reported descriptively as percentages of patients experiencing adverse and serious adverse events.	Time to event: number of fever-free days will be calculated, as well as the average number of days between fever cycles from baseline to end of study which is 12 months.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Maximal fever experienced during a PFAPA febrile episode will be recorded as an average of the peak temperature recorded during each episode throughout the year and compared between the study groups	Decreased maximal fever experienced during a PFAPA febrile episode.	Maximal fever experienced during a PFAPA febrile episode will be recorded as an average of the peak temperature recorded during each episode throughout the year
Number of administrations of corticosteroid necessary for treatment of PFAPA syndrome, recorded as the average number of administrations per fever episode throughout the year	Decreased administrations of corticosteroid necessary for treatment of PFAPA syndrome.	Number of administrations of corticosteroid necessary for treatment of PFAPA syndrome, recorded as the average number of administrations per fever episode throughout the year
The average duration of the individual cyclic febrile episodes	Decrease duration of the individual cyclic febrile episodes in patients with PFAPA.	average duration of the individual cyclic febrile episodes in patients with PFAPA will be assessed from baseline to the end of study which is 1 year
The number of patients undergoing tonsillectomy will be compared between the study groups	Fewer patients undergoing tonsillectomy as a treatment for PFAPA syndrome	At any time during the study from baseline to end of study, which is 12 months this will recorded

Collaborators and Investigators

• Sponsor: Connecticut Children's Medical Center
• Collaborators: DuPont Nutrition and Health
• Investigators: Principal Investigator: Nicholas Bennett, MBBChir PhD, Connecticut Children's Medical Center

Study record dates

Study Major Dates

• Study Start: October 1, 2016
• Primary Completion (Actual): September 1, 2017
• Study Completion (Actual): September 1, 2017

Study Registration Dates

• First Submitted: August 20, 2015
• First Submitted That Met QC Criteria: August 28, 2015
• First Posted (Estimate): August 31, 2015

Study Record Updates

• Last Update Posted (Actual): January 24, 2018
• Last Update Submitted That Met QC Criteria: January 23, 2018
• Last Verified: January 1, 2018

More Information

Terms related to this study

• Keywords: PFAPA
• Additional Relevant MeSH Terms: Infections; Respiratory Tract Infections; Respiratory Tract Diseases; Lymphatic Diseases; Genetic Diseases, Inborn; Pharyngeal Diseases; Stomatognathic Diseases; Otorhinolaryngologic Diseases; Mouth Diseases; Hereditary Autoinflammatory Diseases; Body Temperature Changes; Fever; Stomatitis; Pharyngitis; Stomatitis, Aphthous; Familial Mediterranean Fever; Lymphadenitis
• Other Study ID Numbers: 15-017