The purpose of this study is to assess the safety and efficacy of extended dosing with IONIS GHR-LRx in participants with acromegaly as add-on to somatostatin receptor ligands (SRL) therapy.



Eligible Ages
Between 18 Years and 75 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  • Randomized in index trial (CS2) and completed the entire study, or completion of the treatment period for CS2 and completed or plan to complete PTWK5 visit with an acceptable safety profile, per investigator judgment - Participants with confirmed stable monthly regimen of SRL for 3 months prior to screening - Able and willing to participate in a 53-week treatment and 14-week post-treatment study

Exclusion Criteria

  • Treatment with any other acromegaly medications taken prior to Day 1 within the time period: bromocriptine: 2 weeks, carbergoline: 4 weeks, quinagolide: 4 weeks, pegvisomant: 4 weeks and pasireotide: 4 months - Participant who received surgery for pituitary adenoma in the last 3 months prior to screening and participants needing and/or planning to receive surgery for the pituitary adenoma during the trial - Unwilling to comply with required study procedures during the treatment and post-treatment periods

Study Design

Phase 2
Study Type
Intervention Model
Single Group Assignment
Primary Purpose
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
IONIS GHR-LRx (as per dose in previous study) will be administered subcutaneously once every 28 days for 53 weeks.
  • Drug: IONIS GHR-LRx
    IONIS GHR-LRx subcutaneous injection
  • Drug: SRL
    Participants will receive SRL once monthly

More Details

Enrolling by invitation
Ionis Pharmaceuticals, Inc.

Study Contact

Detailed Description

This extension study will include participants up to 60 participants with acromegaly from Study NCT03548415. All participants will remain on the same dose from the previous study and receive IONIS GHR-LRx (SC) injection once every 28 days as add-on to SRL therapy for 53 weeks. At the end of 53 weeks, participants will enter a 14-week post-treatment (PT) evaluation period.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.