Clinical Trial Finder

Pilot Study of Metformin for Patients With Fanconi Anemia ID: NCT03398824


This is a single institution, open-label, single arm pilot study of Metformin in patients with Fanconi Anemia (FA) and cytopenias with the primary endpoint of hematologic response. This study will also assess safety, tolerability, and the biologic effects of Metformin in patients with FA.


Fanconi Anemia

Recruitment Status



Eligibility Criteria

Inclusion Criteria:

- Age > 6 years and ≤35 years

- Lansky/Karnofsky performance status ≥ 50% for patients ≥16 years of age and Lansky ≥
50% for patients <16 years of age (see Appendix A)

- Diagnosis requirement

- Participants must have a clinical diagnosis of Fanconi Anemia.

- Participants must have confirmed diepoxybutane-mitomycin C (DEB/MMC) stress
testing to document diagnosis of Fanconi Anemia.

- Patients must have at least one of the following cytopenias: Hemoglobin <10g/dL;
Platelets <100k/uL; Absolute neutrophil count <1000/uL

- Participants must have normal organ function as defined below:

- Hepatic Function : Total bilirubin ≤ 1.5 x upper limit of normal for age; alanine
aminotransferase (ALT)/aspartate aminotransferase (AST) ≤ 135 U/L

- Renal Function: A serum creatinine based on age/gender as follows:

Age Maximum Serum Creatinine (mg/dL) Male Female

1. to < 2 years 0.6 0.6

2. to < 6 years 0.8 0.8

6 to < 10 years 1 1 10 to < 13 years 1.2 1.2 13 to < 16 years 1.5 1.4

≥ 16 years 1.7 1.4


• Creatinine clearance ≥ 60 mL/min/1.73 m2 for participants with creatinine levels above
institutional normal

- Normal cardiac status as documented clinically, otherwise they will need an
echocardiogram prior to enrollment

- Serum bicarbonate must be >17.

- Participants of child-bearing or child-fathering potential must agree to use adequate
contraception (hormonal birth control; intrauterine device; double barrier method; or
total abstinence) throughout their participation, including up until 30 days after
last dose of Metformin.

- Patients must be able to swallow pills.

- Ability to understand and/or the willingness of the patient (or parent or legally
authorized representative, if minor) to provide informed consent, documented using an
institutionally approved informed consent procedure

Exclusion Criteria:

- Patients must not have undergone prior bone marrow transplantation.

- Patients must not have very severe aplastic anemia at the time of enrollment which
would require bone marrow transplantation (as defined by at least 2 out of the
following 3: Absolute Neutrophil Count (ANC) <200k/uL, platelets <20k/uL, absolute
reticulocyte count <40k/uL).

- Patients must not be taking any other concurrent medications to improve their
hematopoiesis such as androgens or growth factors such as Granulocyte
colony-stimulating factor (G-CSF), erythropoietin (EPO), or thrombopoietin (TPO)
mimetics. There is a one month wash-out period for prior therapies including

- Pregnant participants will not be entered on this study given that the effects of
Metformin on the developing human fetus are unknown.

- Breastfeeding mothers are not eligible because there is an unknown but potential risk
for adverse events in nursing infants secondary to treatment of the mother with

- Patients must not have a history of allergic reactions attributed to compounds of
similar chemical or biologic composition to Metformin.

- Patients must not have uncontrolled intercurrent illness including, but not limited
to, ongoing or active infection, symptomatic congestive heart failure, unstable angina
pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would
limit compliance with study requirements.

- Patients must not have prior history of symptomatic hypoglycemia over the past year or
hypoglycemia with glucose <50mg/dL on screening and baseline laboratory assessments.

- Patients must not have type 1 diabetes mellitus.

- Patients must abstain from alcohol as part of this study.

- Patients must not have a diagnosis of myelodysplastic syndrome or leukemia, or other
concurrent malignancy undergoing treatment.

- Patients must not have vitamin B12 deficiency.

- Patients must not have Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency.


Intervention Type


Intervention Name

metformin HCl


Phase 2



Minimum Age

6 Years

Maximum Age

35 Years

Download Date

October 14, 2020

Principal Investigator

Akiko Shimamura, MD, PhD

Primary Contact Information

Ashley Galvin

For more information and to contact the study team:

For more information on this trial, visit

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