E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
Acromegaly is typically caused by a growth hormone (GH) secreting tumor in the pituitary. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Hormonal diseases [C19] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10000599 |
E.1.2 | Term | Acromegaly |
E.1.2 | System Organ Class | 10014698 - Endocrine disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the effect of paltusotine versus placebo on IGF-1 response |
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E.2.2 | Secondary objectives of the trial |
To evaluate the effect of paltusotine versus placebo on IGF-1 level
To evaluate the effect of paltusotine versus placebo on IGF-1 response To evaluate the effect of paltusotine versus placebo on GH response To evaluate the effect of paltusotine versus placebo on acromegaly symptoms
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Willing and able to provide written informed consent prior to any study-related procedures. 2. Willing and able to comply with the study procedures as specified in the protocol and comply with the study treatment administration. 3. Subjects ≥18 years of age at the time of Screening, who fall into 1 of the following 3 groups are eligible to participate in the study. • Medically naïve group (Group 1): Those who have not been previously treated with acromegaly medications (including LA-SRLs) who at Screening have IGF 1 ≥1.3×ULN (the lower limit for eligibility is mean IGF-1 of 1.25×ULN when rounded to 2 decimal places) confirmed by the central laboratory test at S1. Group 1 subjects must have had at least 1 pituitary surgery 3 months or more prior to Screening. • Previously Treated group (no treatment within previous 4 months) (Group 2): Subjects who have last been treated with acromegaly medications at least 4 months prior to Screening and who have IGF 1 ≥1.3×ULN (the lower limit for eligibility is mean IGF-1 of 1.25 when rounded to 2 decimal places) confirmed by the central laboratory test at S1. • Washout group (Group 3): Subjects at Screening who are receiving stable treatment (no change in dose for 3 months prior to Screening) with octreotide or lanreotide monotherapy, who have IGF-1 ≤1.0×ULN (the upper limit for eligibility is mean IGF-1 of 1.04 when rounded to 2 decimal places) at Screening Visit 1 and are willing to washout of their medication during the Screening Period. Any form of pretrial octreotide or lanreotide monotherapy (long- or short-acting [SC, IM, or oral]) can be washed out and will determine the duration of the Screening Period. After informed consent is provided, the subject should not receive further pretrial acromegaly medication. IGF-1 must rise at least 30% from the first Screening Visit to the last Screening Visit and to ≥1.1×ULN (the lower limit for eligibility is mean IGF-1 of 1.05 when rounded to 2 decimal places) confirmed by the central laboratory test at S2 or S3, if needed) to qualify for enrollment. 4. Previous diagnosis of acromegaly confirmed by the Investigator and approved by the Medical Monitor. This requires evaluable documentation of a pituitary adenoma. 5. If currently using thyroid hormone therapy, the subject should be adequately treated based on clinical status and free thyroxine concentration measured during Screening and on a stable dose of thyroid hormone for at least 8 weeks prior to Screening. 6. Females who engage in heterosexual intercourse must be of non childbearing potential, defined as either surgically sterile (i.e., hysterectomy, bilateral salpingectomy, or bilateral oophorectomy), OR be postmenopausal with at least 1 year of amenorrhea, OR must agree to use either a highly effective or a clinically acceptable method of contraception from the beginning of Screening until at least 30 days after the last dose of study drug. 7. If the subject is male, the subject should agree to use a condom when sexually active with a female partner of childbearing potential from Screening until at least 30 days after the last dose of study drug (or be surgically sterile [i.e., vasectomy with documentation]; or remain abstinent [when this is in line with the preferred and usual lifestyle]. Male subjects should also agree to not donate sperm for the duration of the study and until at least 30 days after the last dose of study drug. |
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E.4 | Principal exclusion criteria |
1. History of ineffectiveness or significant intolerance of octreotide or lanreotide treatment, as determined by the Investigator. 2. History of pituitary radiation therapy within 3 years of Screening. 3. Subjects with adrenal insufficiency, diabetes insipidus, or central hypogonadism who are not receiving adequate hormone replacement therapy at the time of Screening, as determined by the Investigator. 4. High risk pituitary tumor pattern as defined by: • Compression of the optic chiasm or invasion of adjacent brain structures (other than sphenoid sinus or cavernous sinus) • History of tumor growth within 1 year after surgery or radiation (unless it occurred during a period of medical therapy interruption) • Anticipated requirement for neurosurgical intervention or radiation therapy within the time course of the study. • Pituitary carcinoma currently or at any time in the past. 5. History of major surgery/surgical therapy for any cause within 4 weeks prior to Screening. 6. Diabetes mellitus treated with insulin for less than 6 weeks prior to the study entry, or with change in total daily insulin dose by >15% within 6 weeks prior to Screening. 7. History of unstable angina or acute myocardial infarction within the 12 weeks preceding the Screening Visit or other clinically significant cardiac disease at the time of screening as judged by the Investigator. 8. Known history of hepatitis B or human immunodeficiency virus, or active hepatitis C infection. 9. Active malignant disease within the last 5 years with exception of basal and squamous cell carcinoma of the skin with complete local excision and resected carcinoma in situ of cervix. 10. Concomitant mental condition rendering him/her unable to understand the nature, scope, and possible consequences of the study, and/or evidence of poor compliance with medical instructions. 11. Use of the following medications as outlined: Any history of acromegaly medication use (G1 only) • Lanreotide depot or octreotide LAR (within 16 weeks before Screening) (G2 only) • Pasireotide LAR (within 24 weeks prior to Screening) • Pegvisomant (within 16 weeks before Screening) • Dopamine agonists (within 16 weeks before Screening) • Any combination of 2 or more acromegaly medications at Screening • Proton pump inhibitors (from start of Screening) until the end of the study 12. Current use of oral estrogen replacement therapy for <12 weeks prior to Screening. 13. Current use of medications that are strong inducers of CYP3A4 within 2 weeks prior to Screening 14. Known allergy or hypersensitivity to any of the test materials or related compounds. 15. Active COVID-19 confirmed or suspected based on clinical symptoms. 16. Symptomatic cholelithiasis. 17. Clinically significant concomitant disease including but not limited to cardiovascular disease, severe renal insufficiency (estimated glomerular filtration rate <30 mL/min/1.73 m2), or significant liver disease (including cirrhosis). 18. Clinically significant abnormal findings during the Screening Period or any other medical condition(s) or laboratory findings that, in the opinion of the Investigator, might jeopardize the subject’s safety or ability to complete the study. 19. Systolic blood pressure >160 mmHg and/or diastolic blood pressure >100 mmHg during Screening. If the initial measurement is out of range, it may be repeated 2 more times after 15 minutes and the last assessment should be used to determine subject’s eligibility. 20. Resting (at least 10 minutes) palpated pulse rate <45 bpm or >105 bpm during Screening. If either of these criteria is met, the assessment should be repeated 2 more times and the last assessment should be used to determine the subject’s eligibility. 21. QT interval corrected using Fridericia’s formula (QTcF) >480 msec (or corrected QT [QTc] interval >500 msec in the presence of complete bundle branch block) or PR interval >240 msec during Screening based on a central reading of an average of 3 ECGs each separated in time by approximately 1 minute after the subject has rested quietly in the supine position for at least 10 minutes without significant stimulation (noise, television, etc.). 22. Alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST) >3×ULN, and/or total bilirubin >1.5×ULN during Screening. Subjects with previously diagnosed Gilbert’s syndrome not accompanied by other hepatobiliary disorders and associated with total bilirubin <3.5 mg/dL (<51.3 µmol/L) will be permitted. 23. Poorly controlled diabetes mellitus defined as having a hemoglobin A1c (HbA1c) ≥8.5% (≥69 mmol/mol), or estimated HbA1c based on fructosamine if HbA1c is not evaluable (e.g., due to hemoglobinopathies). 24. Female subjects who are pregnant or lactating. Subjects must have a negative pregnancy test during Screening and prior to the first dose of study drug. 25. Known history of, or current alcohol or drug abuse, within the last year. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Proportion of subjects who achieve biochemical response in IGF-1 (≤1.0× the upper limit of normal [ULN]) at the End of the Randomized Control Phase (EOR) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
24 weeks for the primary endpoint. |
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E.5.2 | Secondary end point(s) |
Change from baseline in IGF-1, in units of ULN, to EOR
Proportion of subjects who achieve IGF-1 <1.3×ULN at EOR Proportion of subjects with GH <1 ng/mL at Week 22 Change from baseline in Total Acromegaly Symptoms Diary (ASD) score to EOR |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
24 weeks for the secondary endpoint. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | Yes |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 31 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Peru |
Brazil |
China |
India |
Israel |
United Kingdom |
United States |
Bulgaria |
France |
Germany |
Greece |
Hungary |
Italy |
Poland |
Spain |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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Last visit of the last subject in the study |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 2 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 6 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |