Overview

A Study to Evaluate the Effectiveness and Safety of CAEL-101 in Patients With Mayo Stage IIIa AL Amyloidosis

Status:
Recruiting
Trial end date:
2023-02-24
Target enrollment:
0
Participant gender:
All
Summary
AL (or light chain) amyloidosis begins in the bone marrow where abnormal proteins misfold and create free light chains that cannot be broken down. These free light chains bind together to form amyloid fibrils that build up in the extracellular space of organs, affecting the kidneys, heart, liver, spleen, nervous system and digestive tract. The primary purpose of this study is to determine if CAEL-101 improves the overall survival in Patients with cardiac AL Amyloidosis.
Phase:
Phase 3
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
Caelum Biosciences
Collaborator:
IQVIA Biotech
Treatments:
Bortezomib
Cyclophosphamide
Dexamethasone
Criteria
Inclusion Criteria:

- Each patient must meet the following criteria to be enrolled in this study.

1. Be able to and provide written informed consent and be willing and able to comply
with all study procedures

2. Adult, 18 years and older

3. AL amyloidosis Mayo stage IIIa based on the 2013 European Modification of the
2004 Standard Mayo Clinic Staging in patients with advanced cardiac involvement
at the time of Screening

4. Measurable hematologic disease at Screening as defined by at least one of the
following:

1. Involved/Uninvolved Free Light Chain Difference (dFLC) > 4 mg/dL or

2. Involved Free Light Chain (iFLC) > 4 mg/dL with abnormal ratio or

3. Serum Protein Electrophoresis (SPEP) m-spike > 0.5 g/dL

5. Histopathological diagnosis of amyloidosis AND confirmation of AL derived amyloid
deposits by at least one of the following:

1. Immunohistochemistry or

2. Mass spectrometry or

3. Characteristic electron microscopy appearance

6. Cardiac involvement as defined by:

1. Documented clinical signs and symptoms supportive of a diagnosis of heart
failure in the setting of a confirmed diagnosis of AL amyloidosis in the
absence of an alternative explanation for heart failure AND

2. At least one of the following:

i. Endomyocardial biopsy demonstrating AL cardiac amyloidosis or

ii. Echocardiogram demonstrating a mean left ventricular wall thickness
(calculated as [IVSd+LPWd]/2) of > 12 mm at diastole in the absence of other
causes (e.g., severe hypertension, aortic stenosis), which would adequately
explain the degree of wall thickening or

iii. Cardiac MRI with gadolinium contrast agent diagnostic or cardiac amyloidosis

7. Planned first-line treatment for plasma cell dyscrasia is a CyBorD-based regimen
administered as Standard of Care (SoC)

8. Adequate bone marrow reserve and hepatic function as demonstrated by:

1. Absolute neutrophil count ≥ 1.0 x 109/L

2. Platelet count ≥ 75 x 109/L

3. Hemoglobin ≥ 9 g/dL

4. Total direct bilirubin ≤ 2 times the upper limit of normal (x ULN) unless
due to Gilbert's syndrome.

5. Aspartate aminotransferase (AST) ≤ 3 x ULN

6. Alanine aminotransferase (ALT) ≤ 3 x ULN

7. Alkaline phosphatase (ALP) ≤ 5 x ULN (except for patients with hepatomegaly
and isozymes specific to liver, rather than bone)

9. Women of childbearing potential (WOCBP) must have a negative pregnancy test
during Screening and must agree to use highly effective physician approved
contraception from Screening to at least 5 months following the last study drug
administration or 12 months following the last dose of her PCD therapy, whichever
is longer

10. Men must be surgically sterile or must agree to use effective physician approved
contraception and refrain from donating sperm from Screening to at least 5 months
following the last study drug administration or 12 months following the last dose
of his PCD therapy, whichever is longer

Exclusion Criteria:

- Patients who meet any of the following criteria will not be permitted entry to the
study.

1. Have any other form of amyloidosis other than AL amyloidosis

2. Received prior therapy for AL amyloidosis or multiple myeloma. A maximum exposure
of 160 mg dexamethasone (or equivalent corticosteroid) since diagnosis of AL
amyloidosis and prior to randomization is allowed.

3. Meets the International Myeloma Working Group (IMWG) definition of multiple
myeloma or POEMS syndrome

4. Have supine systolic blood pressure < 90 mmHg or symptomatic orthostatic
hypotension, defined as a decrease in systolic blood pressure upon standing of >
30 mmHg despite medical management (e.g., midodrine, fludrocortisones) in the
absence of volume depletion

5. Taking prednisone or its equivalent > 10 mg/day

6. Taking doxycycline

7. Receiving dialysis

8. Planned stem cell transplant during the first 6 months of protocol therapy. Stem
cell collection during the protocol therapy is permitted.

9. Have had myocardial infarction, uncontrolled angina, severe uncontrolled
ventricular arrhythmias within 6 months prior to screening or percutaneous
cardiac intervention with recent stent or coronary artery bypass grafting within
4 months prior to screening. Exacerbation of chronic condition or new acute
condition will require discussion and approval by the Medical Monitor.

10. Left Ventricular Ejection Fraction (LVEF) is < 40% by echocardiogram at Screening

11. Have severe valvular stenosis (e.g., aortic or mitral stenosis with a valve area
< 1.0 cm2) or severe congenital heart disease

12. Have history of sustained ventricular tachycardia or aborted ventricular
fibrillation or a history of atrioventricular nodal or sinoatrial nodal
dysfunction for which a pacemaker/implantable cardioverter-defibrillator (ICD) is
indicated but not placed. (Participants who do have a pacemaker or ICD are
allowed in the study.)

13. QT corrected by Fridericia (QTcF) is > 550 msec. Participants who have a
pacemaker may be included regardless of calculated QTc interval.

14. There is evidence of acute ischemia or active conduction system abnormalities
with the exception of any of the following:

1. First degree Atrioventricular (AV)-block

2. Second degree AV-block Type 1 (Mobitz Type 1/Wenckebach type)

3. Right or left bundle branch block

4. Atrial fibrillation with a controlled ventricular rate. (An uncontrolled
ventricular rate [i.e., > 110 beats per minute] determined by an average of
three beats in lead II or representative beats in lead II is not allowed)

15. Have had major surgery within 4 weeks of randomization or is planning major
surgery during the study. Patients with surgical procedures conducted under local
anesthesia may participate

16. There is active malignancy (including lymphoma) with the exception of any of the
following:

1. Adequately treated basal cell carcinoma, squamous cell carcinoma, or in situ
cervical cancer

2. Adequately treated stage I cancer from which the patient is currently in
remission and has been in remission for > 2 years

3. Low-risk prostate cancer with Gleason score < 7 and prostate-specific
antigen < 10 mg/mL

4. Other localized and/or low risk malignancies may be permitted with Medical
Monitor approval.

17. Have received an investigational drug/device in another clinical investigational
study within 60 days before Screening

18. Hypersensitivity to the study drug

19. Have received a live vaccine within 4 weeks prior to first dose of CyBorD

20. Women who are breast feeding

21. Have any other medical, social or psychological factors that could affect the
patient's safety or ability to consent personally or comply with study
procedures.