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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/ct2/show/NCT05500508




Registration number
NCT05500508
Ethics application status
Date submitted
10/08/2022
Date registered
15/08/2022
Date last updated
19/10/2023

Titles & IDs
Public title
Oral AMXT 1501 Dicaprate in Combination With IV DFMO
Scientific title
A Phase 1B/2A Study of the Safety, Tolerability and Initial Efficacy of Oral AMXT 1501 Dicaprate and Intravenous Difluoromethylornithine (DFMO) in Patients With Cancer
Secondary ID [1] 0 0
AMXT1501-102
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Cancer 0 0
Solid Tumor 0 0
Solid Carcinoma 0 0
Advanced Cancer 0 0
DIPG Brain Tumor 0 0
Ovary Cancer 0 0
Breast Cancer 0 0
Papillary Thyroid Cancer 0 0
Head and Neck Cancer 0 0
Gastric Cancer 0 0
Nsclc 0 0
Mesotheliomas Pleural 0 0
Mesothelioma Peritoneum 0 0
Esophageal Cancer 0 0
Diffuse Midline Glioma, H3 K27M-Mutant 0 0
Endometrial Cancer 0 0
Cervical Cancer 0 0
Melanoma 0 0
Colorectal Cancer 0 0
Glioma, Malignant 0 0
Condition category
Condition code
Cancer 0 0 0 0
Brain
Cancer 0 0 0 0
Womb (Uterine or endometrial cancer)
Cancer 0 0 0 0
Lung - Mesothelioma
Cancer 0 0 0 0
Thyroid
Cancer 0 0 0 0
Ovarian and primary peritoneal

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - AMXT1501
Treatment: Drugs - DFMO

Experimental: Escalation - Dose escalation of DFMO with AMXT1501 fixed dose will follow a 3 + 3 dose escalation design.
The AMXT 1501 starting dose administered in the first cohort will be 1200mg total daily dose (200 mg capsules; 3 capsules in morning; 3 capsules in evening) along with IV DFMO administered in continuous infusion at 2mL/hr over a 28 days per cycle. The patient can be treated for additional 28 day treatment cycles as deemed appropriate by their study investigator. Dose escalation of DFMO alone will increase per cohort.

Experimental: Expansion - The expansion cohort will include up to 40 evaluable patients at a proposed RP2D level of AMXT1501 and DFMO defined by AMXT1501-101A study to further characterize safety at proposed RP2D dose level with repeat dosing, and characterize early anti-tumor activity.


Treatment: Drugs: AMXT1501
AMXT 1501 dicaprate is D-lys(palmitoyl)-spermine dicaprate salt in 200 mg (free base content) enterically-coated capsules

Treatment: Drugs: DFMO
DFMO is DL-2-(difluoromethyl) ornithine monohydrochloride monohydrate provided as a 200 mg/mL aqueous solution in 20 mL vials.
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Determine DLTs and RP2Ds in AMXT 1501 in combination with IV DFMO
Timepoint [1] 0 0
1 year
Primary outcome [2] 0 0
Determine safety and tolerability of AMXT1501 in combination with IV DFMO
Timepoint [2] 0 0
1 year
Secondary outcome [1] 0 0
Determine the PK using AUC of AMXT 1501 and IV DFMO
Timepoint [1] 0 0
6 months
Secondary outcome [2] 0 0
Determine the PK using Cmax of AMXT 1501 and IV DFMO
Timepoint [2] 0 0
6 months
Secondary outcome [3] 0 0
Characterize investigator defined response Overall Response Rate (ORR) using RECIST v1.1
Timepoint [3] 0 0
6 months
Secondary outcome [4] 0 0
Characterize investigator defined Duration of Response (DOR)
Timepoint [4] 0 0
6 months
Secondary outcome [5] 0 0
Characterize AMXT1501 and IV DFMO on the expression of immune related gene signatures
Timepoint [5] 0 0
1 year

Eligibility
Key inclusion criteria
INCLUSION CRITERIA

- IMPORTANT NOTE- Younger 12-17 year old patients are also eligible for this study if
they meet the noted DIPG or DMG criteria noted below, which is separate from Patient
Diagnosed with Advanced Solid Tumors.

- Patients will be eligible for study participation only if they meet ALL the inclusion
criteria applicable to their diagnosis.

INCLUSION FOR PATIENTS DIAGNOSED WITH ADVANCED SOLID TUMORS

- Understand and sign written IRB-approved informed consent form and be willing to
comply with all study procedures.

- Diagnosed with unresectable, locally advanced, or metastatic solid tumor for which no
standard therapy is recognized or for which standard therapy has failed. Planned tumor
types for evaluation include:

- Platinum resistant ovarian cancer (including - primary peritoneal cancer and
fallopian tube cancer)

- Breast cancer

- Papillary thyroid cancer

- Head and neck cancer

- Gastric cancer

- Non-small cell lung cancer (NSCLC)

- Mesothelioma: Pleural and peritoneal

- Esophageal

- Endometrial cancer

- Cervical

- Melanoma

- Colorectal cancers (colon, rectal)

- Grade 4 Gliomas (including both IDH WT and IDH-mutant astrocytoma)

- Must be =18 years of age.

- Histologically or cytologically documented disease.

- Has evaluable or measurable disease by RECIST v1.1 or mRECIST criteria.

o For patients with Grade 4 glioma, has evaluable or measurable disease by RANO
(Appendix 5).

- Provide tumor tissue from biopsy taken during Screening period.

- Performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) scale.

INCLUSION FOR PATIENTS DIAGNOSED WITH DIPG OR DMG Patients must also meet other generally
noted criteria as noted within the protocol

- For patients <18 years of age, the parents or legal guardians must understand and sign
the written IRB-approved informed consent form (ICF). The patient, if able, must
understand and sign the IRB-approved consent (assent) and be willing to comply with
all study procedures.

o For patients =18 years of age, the patient must understand and sign written
IRB-approved ICF and be willing to comply with all study procedures.

- Diagnosed with DIPG or DMG.

o Any anatomic site of origin is acceptable.

- Must be =12 years of age and >40 kg in body weight.

- Radiologically documented disease.

- (a) - Patient with refractory or progressive DIPG or DMG, defined as tumors with
a pontine epicenter and diffuse involvement of at least 2/3 of the pons, are
eligible without histologic confirmation.

- (b) - Patients with brainstem tumors that do not meet radiographic criteria or
are not considered to be typical DIPG or DMG will be eligible if the tumors have
been biopsied and proven to be high-grade gliomas (such as anaplastic
astrocytoma, glioblastoma, H3 K27M-mutant DMG).

- Has evaluable or measurable disease by RANO or RAPNO criteria.

o Has evaluable or measurable disease by RANO (for adults) or RAPNO (for children

- Provide cerebrospinal fluid (CSF) sample. Patients with pontine lesions for whom a
radiological diagnosis of DIPG, or DMG is made will be eligible without a CSF sample,
although CSF sample is strongly encouraged.

- Performance score:

- (a) Patients >16 years of age, Karnofsky score =50%.

- (b) Patients =12 and =16 years of age, Lansky =50%. Note: Patients who are unable
to walk because of paralysis, but who are up in a wheelchair, will be considered
ambulatory for the purpose of assessing the performance score.

INCLUSION FOR ALL PATIENTS All patients are required to meet these inclusion exclusion
criteria to be considered eligible for the study

- Patients must have fully recovered from the acute toxic effects of all prior
anti-cancer chemotherapy: The following minimum periods from treatment apply:

- (a) Myelosuppressive chemotherapy: At least 21 days after the last dose of
myelosuppressive chemotherapy (42 days if prior nitrosourea).

- (b) Hematopoietic growth factors: At least 14 days after the last dose of a
long-acting growth factor (e.g., Neulasta) or 7 days for short-acting growth
factor.

- (c) Biologic (anti-neoplastic agent): At least 7 days after the last dose of a
biologic agent. For agents that have known adverse events occurring beyond 7 days
after administration, this period must be extended beyond the time during which
adverse events are known to occur.

- (d) Immunotherapy: At least 42 days after the completion of any type of
vaccination.

- (e) Monoclonal antibodies: >21 days must have elapsed from the infusion of last
dose of antibody and toxicity related to antibody therapy must be recovered to
Grade =1.

- (f) Radiation therapy: Patients must have had their last fraction of craniospinal
or focal irradiation a minimum of 8-12 weeks prior to enrollment.

- (g) Stem cell transplant: Patients must be =3 months since autologous stem cell
transplant. Patients who received allogenic stem cell transplant or solid organ
transplant are not eligible for study.

- Patient is able to take oral medications and willing to use an at-home infusion pump.

- Must have adequate bone marrow and renal/hepatic function at the screening and
baseline visits, defined as:

- (a) Absolute neutrophil count (ANC) =1.5×109/L without granulocyte
colony-stimulating factor (G-CSF) support within 7 days

- (b) Platelet =100×109/L, without transfusion within 7 days

- (c) Hemoglobin =9 g/dL, without transfusion support within 7 days

- (d) Activated partial thromboplastin time/ partial thromboplastin time (aPTT/PTT)
=1.5×ULN.

- (e) Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =2.5×ULN
(if liver metastases are present, then =5×ULN is allowed).

- (f) Total serum bilirubin =1.5×ULN, (except for patients with known Gilbert's
Syndrome in whom =3×ULN is permitted).

- (g) The patient is clinically euthyroid.

- (h) Renal: Serum creatinine <1.5×ULN or creatinine clearance =60 mL/min/1.73 m2
for patients with serum creatinine levels >1.5×ULN.

- (i) Any Grade 3 or higher lab abnormalities should be discussed and approved by
the Medical Monitor prior to enrollment (even if not considered clinically
significant).

- Active secondary malignancies will not be allowed, with the exception of:

- (a) Adequately treated basal cell carcinoma, SCC of the skin, or in situ cervical
cancer;

- (b) Adequately treated Stage 1 cancer from which the subject is currently in
remission and has been in remission for =2 years;

- (c) Low-risk prostate cancer with Gleason score <7 and prostate-specific antigen
<10 ng/mL, or

- (d) Any other cancer from which the patient has been disease-free for =3 years.

- Patient compliance and geographic proximity (as determined by the Principal
Investigator [PI]) to allow adequate follow-up.

- Both male and female patients must be willing to consent to using highly effective
contraception prior to study entry, while on treatment, and at least 3 months
thereafter

EXCLUSION CRITERIA

- Patients will not be eligible for study participation if they meet ANY of the
exclusion criteria.

- Please note different criteria for patients with Advanced Solid Tumors (adults) vs
patients with DIPG or DMG (pediatric)

EXCLUSION FOR PATIENTS DIAGNOSED WITH ADVANCED SOLID TUMOR(S)

- Have a seizure disorder where >1 seizure has occurred within the last year.

- Patient with treated (surgically excised or irradiated) with stable brain metastases
are eligible as long as the treatment was at least 4 weeks prior to initiation of
study drug and baseline brain CT with contrast or magnetic resonance imaging (MRI)
within 2 weeks of initiation of study drug is negative for new brain metastases.
Patients with stable brain metastases must not require therapy with corticosteroids.

- Treatment with radiation therapy, surgery, chemotherapy, or immunotherapy within 4
weeks prior to study entry (6 weeks for nitrosoureas or Mitomycin C). Limited prior
palliative radiation may be permissible no less than 2 weeks prior to C1D1 with
approval from the Medical Monitor.

EXCLUSION FOR PATIENTS WITH DIPG OR DMG

- Patients with seizure disorders may be enrolled if seizures are well-controlled, defined
as no increase in seizure frequency in the prior 7 days.

- Anticonvulsants should be used as clinically indicated.

- The use of enzyme inducing anticonvulsants is not permitted.

EXCLUSION FOR ALL PATIENTS

- Patients with treated (surgically excised or irradiated) stable brain metastases are
eligible as long as the treatment was at least 8 to 12 weeks prior to initiation of
study drug and baseline brain CT with contrast or MRI within 2 weeks of initiation of
study drug is negative for new brain metastases. Patients with brain metastases or who
have Grade 4 glioma receiving corticosteroids who have not been on a stable or
decreasing dose of corticosteroid for at least 7 days prior to enrollment are not
eligible.

- Have clinically significant cardiovascular disease (e.g., significant cardiac
conduction abnormalities, uncontrolled hypertension, myocardial infarction, cardiac
arrhythmia or unstable angina, New York Heart Association Grade 3 or greater
congestive heart failure, serious cardiac arrhythmia requiring medication, Grade 2 or
greater peripheral vascular disease, or history of cerebrovascular accident [CVA])
within 6 months of enrollment.

- History or presence of an abnormal ECG that, in the Investigator's opinion, is
clinically meaningful.

- Screening QTcF interval >480 ms is excluded. In the event that a single QTcF is
>480 ms, the patient may enroll if the average QTcF for the 3 ECGs is <480 ms.

- For patients with an intraventricular conduction delay (QRS interval >120 ms),
the JTc interval may be used in place of the QTcF with Sponsor approval. The JTc
must be <340 ms if JTc is used in place of the QTcF.

- Patients with an intraventricular delay due to a left bundle branch block are
excluded.

Note: QTcF prolongation due to pacemaker may enroll if the JTc is normal

- Had major surgery, other than diagnostic surgery, within 4-weeks prior to Day 1.

- Have active bacterial, viral, or fungal infections requiring systemic therapy.

- Women who are pregnant or lactating: NOTE: Women of childbearing potential (WOCBP)
must have a negative serum pregnancy test within 1 week prior to treatment.

- Women not OCBP is defined as

- (i) Postmenopausal with >1 year since last menses

- -- (a) If <65 years old, follicle-stimulating hormone (FSH) >40 mIU/mL.

- -- (b) If =65 years old and not on hormone replacement therapy (HRT), FSH
>30 mIU/mL.

- -- (c)If =65 years old and on HRT, the FSH requirement is not applicable.
Postmenopausal females on HRT will be allowed if HRT has been stable for =6
months prior to dosing of study drug(s).

- Written medical documentation of being sterilized (e.g., hysterectomy, double
oophorectomy, bilateral salpingectomy) with the procedure performed =6 months
prior to dosing study drug(s).

Note: Tubal ligation is not considered a form of permanent sterilization.

- Patients may not have any unresolved toxicity >Grade 1 from previous anticancer
therapy, except for stable chronic toxicities that are not expected to resolve (i.e.,
peripheral neuropathy, alopecia, etc.). Patients who have an ongoing requirement for
thyroid replacement therapy from prior exposure to a checkpoint inhibitor but who are
clinically euthyroid are permitted.

- Have an unwillingness or inability to comply with procedures required in this
protocol.

- Current active liver disease from any cause, including hepatitis A (hepatitis A virus
immunoglobulin M [Hep A IgM] positive), hepatitis B (hepatitis B virus [HBV] surface
antigen positive), or hepatitis C (hepatitis C virus [HCV] antibody positive,
confirmed by HCV ribonucleic acid). Patients with HCV with undetectable virus after
treatment are eligible. Patients with a prior history of HBV are eligible if
quantitative polymerase chain reaction (PCR) for HBV DNA is negative. Note that
elevated levels of biotin may interfere with viral serology testing.

- Have a serious nonmalignant disease that, in the opinion of the Investigator or the
Medical Monitor, could compromise protocol objectives.

- Patients who are currently receiving any other investigational agent or who have
received an investigational agent within the last 28 days, with the exception of any
patient who participated in Study AMXT1501-101A.

- Known GI disease or procedure that could interfere with the absorption of study drug,
including inability to swallow whole capsules or conditions that may interfere with
absorption. The Medical Monitor should be contacted for any questions regarding this
exclusion criterion.

- Patients who have exhibited allergic reactions to a similar structural compound,
biological agent, or formulation.

- Use of luteinizing hormone-releasing hormone (LHRH) agonist / antagonists are not
permitted.

- Use of biotin (i.e., Vitamin B7) or supplements containing biotin higher than the
daily adequate intake of 30 µg (NIH-ODS 2020; Section 5.9.2.1). NOTE: Patients who
switch from a high dose to a dose of =30 µg/day are eligible for study entry.

- Infection with human immunodeficiency virus (HIV)-1 or HIV-2. o Exception: Patients
with well-controlled HIV (e.g., CD4 >350/mm3 and undetectable viral load) are
eligible.
Minimum age
12 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria

Study design
Purpose of the study
Treatment
Allocation to intervention
Non-randomised trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Other
Other design features
Phase
Phase 1/Phase 2
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
29/11/2022
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
30/09/2024
Actual
Sample size
Target
56
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
NSW
Recruitment hospital [1] 0 0
Kids Cancer Centre - Sydney
Recruitment postcode(s) [1] 0 0
- Sydney
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Arizona
Country [2] 0 0
United States of America
State/province [2] 0 0
Florida
Country [3] 0 0
United States of America
State/province [3] 0 0
Minnesota
Country [4] 0 0
United States of America
State/province [4] 0 0
Ohio
Country [5] 0 0
United States of America
State/province [5] 0 0
Texas
Country [6] 0 0
United States of America
State/province [6] 0 0
Washington

Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Name
Aminex Therapeutics, Inc.
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
A Phase 1B/2A study will be conducted to establish safety and dose level of AMXT 1501
dicaprate in combination with IV DFMO, in cancer patients.
Trial website
https://clinicaltrials.gov/ct2/show/NCT05500508
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Sue Lee, MD
Address 0 0
Aminex Therapeutics, Inc.
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Project Manager
Address 0 0
Country 0 0
Phone 0 0
910 240 3498
Fax 0 0
Email 0 0
priyanka.varma@iqvia.com
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/ct2/show/NCT05500508