Long Term Use of Somavert (Pegvisomant) For A Regulatory Post Marketing Commitment Plan

SPECIAL INVESTIGATION OF SOMAVERT -LONG TERM USE-

The objective of this surveillance is to collect information about 1) adverse drug reaction not expected from the LPD (unknown adverse drug reaction), 2) the incidence of adverse drug reactions in this surveillance, and 3)factors considered to affect the safety and/or efficacy of this drug.

Study Overview

• Status: Completed
• Conditions: Acromegaly
• Intervention / Treatment: Drug: Somavert (Pegvisomant)

Detailed Description

All the patients whom an investigator prescribes the first Somavert (Pegvisomant) should be registered consecutively until the number of subjects reaches target number in order to extract patients enrolled into the investigation at random.

• Study Type: Observational
• Enrollment (Actual): 251

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

The patients whom an investigator involving A6291023 prescribes Somavert (Pegvisomant).

Description

Inclusion Criteria:

Patients need to be administered Somavert (Pegvisomant) in order to be enrolled in the surveillance.

Exclusion Criteria:

Patients not administered Somavert (Pegvisomant).

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Only
• Time Perspectives: Prospective

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Somavert (Pegvisomant); Patients taking Somavert (Pegvisomant).	Drug: Somavert (Pegvisomant); Somavert (Pegvisomant) 10, 15 or 20mg powder and solvent for solution for injection. Dosage, Frequency : According to Japanese LPD. Duration : According to the protocol of A6291023, the duration of the investigation for findings regarding safety and efficacy of a patient is from the first drug administration to the 5 years after the first administration.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants With Treatment-Related Adverse Events	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. A treatment-related serious adverse event was a treatment-related adverse event resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly. Relatedness to Somavert was assessed by the physician.	5 years
Number of Participants With Treatment-Related Adverse Events Unexpected From Japanese Package Insert	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Expectedness of the adverse event was determined according to the Japanese package insert. Relatedness to Somavert was assessed by the physician.	5 years
Number of Participants With Treatment-Related Adverse Events by Gender	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Relatedness to Somavert was assessed by the physician. Participants with treatment-related adverse events were counted by gender to assess whether it was a risk factor for the occurrence of treatment-related adverse events.	5 years
Number of Participants With Treatment-Related Adverse Events by Age	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Relatedness to Somavert was assessed by the physician. Participants with treatment-related adverse events were counted by age to assess whether it was a risk factor for the occurrence of treatment-related adverse events.	5 years
Number of Participants With Treatment-Related Adverse Events for Participants With Hepatic Function Disorder	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Relatedness to Somavert was assessed by the physician. Participants with treatment-related adverse events were counted by hepatic function disorder to assess whether it was a risk factor for the occurrence of treatment-related adverse events.	5 years
Number of Participants With Treatment-Related Adverse Events for Participants With Renal Impairment	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Relatedness to Somavert was assessed by the physician. Participants with treatment-related adverse events were counted by renal impairment to assess whether it was a risk factor for the occurrence of treatment-related adverse events.	5 years
Number of Participants With Treatment-Related Adverse Events for Participants With Diabetes Mellitus (Concurrent Disease)	A treatment-related adverse event was any untoward medical occurrence attributed to Somavert in a participant who received Somavert. Relatedness to Somavert was assessed by the physician. Participants with treatment-related adverse events were counted by diabetes mellitus (concurrent disease) to assess whether it was a risk factor for the occurrence of treatment-related adverse events.	5 years
Clinical Effectiveness Rate	Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of assessable effectiveness analysis population, was presented. Clinical effectiveness of Somavert was assessed as "effective," "ineffective" or "unassessable" by the physician. Overall effectiveness of Somavert was determined by the physician based on clinical symptoms, laboratory values, and other examinations such as ring size.	5 years
Clinical Effectiveness Rate by Gender	Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of assessable effectiveness analysis population, was presented. Clinical effectiveness of Somavert was assessed as "effective," "ineffective" or "unassessable" by the physician. Overall effectiveness of Somavert was determined by the physician based on clinical symptoms, laboratory values, and other examinations such as ring size. Participants achieved clinical effectiveness by gender were counted to assess whether it contributes to the clinical effectiveness.	5 years
Clinical Effectiveness Rate by Age	Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of assessable effectiveness analysis population, was presented. Clinical effectiveness of Somavert was assessed as "effective," "ineffective" or "unassessable" by the physician. Overall effectiveness of Somavert was determined by the physician based on clinical symptoms, laboratory values, and other examinations such as ring size. Participants achieved clinical effectiveness by age were counted to assess whether it contributes to the clinical effectiveness.	5 years
Clinical Effectiveness Rate in Participants With Hepatic Function Disorder	Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of assessable effectiveness analysis population, was presented. Clinical effectiveness of Somavert was assessed as "effective," "ineffective" or "unassessable" by the physician. Overall effectiveness of Somavert was determined by the physician based on clinical symptoms, laboratory values, and other examinations such as ring size. Participants achieved clinical effectiveness by hepatic function disorder were counted to assess whether it contributes to the clinical effectiveness.	5 years
Clinical Effectiveness Rate in Participants With Diabetes Mellitus (Concurrent Disease)	Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of assessable effectiveness analysis population, was presented. Clinical effectiveness of Somavert was assessed as "effective," "ineffective" or "unassessable" by the physician. Overall effectiveness of Somavert was determined by the physician based on clinical symptoms, laboratory values, and other examinations such as ring size. Participants achieved clinical effectiveness by diabetes mellitus (concurrent disease) were counted to assess whether it contributes to the clinical effectiveness.	5 years

Collaborators and Investigators

• Sponsor: Pfizer
• Investigators: Study Director: Pfizer CT.gov Call Center, Pfizer

Publications and helpful links

Helpful Links

• To obtain contact information for a study center near you, click here.

Study record dates

Study Major Dates

• Study Start (Actual): August 7, 2007
• Primary Completion (Actual): November 9, 2016
• Study Completion (Actual): November 9, 2016

Study Registration Dates

• First Submitted: April 9, 2008
• First Submitted That Met QC Criteria: April 9, 2008
• First Posted (Estimated): April 15, 2008

Study Record Updates

• Last Update Posted (Actual): September 25, 2023
• Last Update Submitted That Met QC Criteria: August 31, 2023
• Last Verified: August 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Endocrine System Diseases; Musculoskeletal Diseases; Hypothalamic Diseases; Bone Diseases; Bone Diseases, Endocrine; Hyperpituitarism; Pituitary Diseases; Acromegaly
• Other Study ID Numbers: A6291023

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No