Valproic Acid (Depakote[Registered Trademark]) to Treat Autoimmune Lymphoproliferative Syndrome (ALPS)

NCT ID: NCT00605657

Last Updated: 2013-03-21

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1/PHASE2
• Total Enrollment: 6 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-01-31
• Study Completion Date: 2011-09-30

Brief Summary

This study will test whether valproic acid (Depakote[Registered Trademark]) can shrink enlarged lymph glands and spleen in patients with autoimmune lymphoproliferative syndrome (ALPS). Depakote has been used for more than 30 years for treating various medical disorders in adults and children, including migraine headaches, seizures and psychiatric disorders. In animal studies, it was effective in shrinking both lymph nodes and spleen in animals with conditions similar to ALPS.

People with ALPS who are between 2 and 70 years of age and who have had an enlarged spleen or lymph glands for at least 1 year may be eligible for this study.

Participants take Depakote as a tablet or liquid or sprinkled on food twice a day for 16 weeks. The drug dose is increased slowly over the first 3 to 4 weeks until the maximum tolerated dose is reached. Blood tests are done at 2, 4, 6, 8 and 10 weeks after starting the drug and 1 week after the drug is stopped to check for treatment side effects. Valproic acid blood levels will be checked during drug escalation, half way through therapy, and just before the end of treatment. A physical examination and CT scan (or ultrasound of the abdomen for patients who cannot undergo CT) are done before starting treatment and at the end of the 16-week treatment period to evaluate the response to treatment.

Patients who tolerate the treatment well and show shrinkage of the lymph glands or spleen may be offered extended treatment for up to 1 year in consultation with their primary physician. During the extended treatment period, blood tests are done at home every 6 to 8 weeks to monitor for drug side effects. Follow up evaluation visits are scheduled at the NIH Clinical Center every 3 months during the extended treatment period and 3, 6, and 12 months after treatment has ended.

Detailed Description

The Autoimmune Lymphoproliferative Syndrome (ALPS) is an inherited disease associated with a defect of lymphocyte apoptosis that leads to lymphoproliferation and autoimmunity. Although, there are immunosuppressive treatments for many of its complications, there currently is no safe and effective therapy for this syndrome itself.

Valproic acid has been recently used as a histone deacetylase (HDAC) inhibitor for inducing apoptosis in malignancies and is being incorporated as part of hematology/oncology clinical trials. A pilot study will be conducted on the safety and efficacy of the drug valproic acid (Depakote [R]) for the treatment of ALPS. Twelve subjects with ALPS, will be treated initially for 4 months with twice-daily administration of valproic acid at escalating doses adjusted by weight, with close monitoring of toxicity and side effects including laboratory parameters related to the drug. The effects of valproic acid treatment on lymph node and/or spleen size will be assessed by computerized tomography scan, ultrasound and physical examination. If valproic acid is effective in reducing the size of lymph nodes and/or spleen size as defined in the study design, subjects may be offered the option to continue further therapy with valproic acid for up to 1 year. The effect of treatment on other laboratory features specific to ALPS will also be assessed. Evaluating the effects of valproic acid on these clinical and laboratory parameters will help to determine if this drug demonstrates sufficient activity to warrant study in a larger randomized controlled trial.

Conditions

ALPS; Hypersplenism; Lymphadenopathy

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Valproic acid

Single arm study involving oral administration of valproic acid and monitoring of its efficacy by CT scans done before and after the intervention. Blood samples were also obtained to monitor safety labs and biomarkers.

Group Type: EXPERIMENTAL

Valproic Acid

Intervention Type: DRUG

Oral administration of valproic acid

CT Scan

Intervention Type: PROCEDURE

CT scans were done before and after treating the patient with valproic acid

Blood Sample

Intervention Type: PROCEDURE

Blood samples were collected before and after the intervention to monitor blood counts and biomarkers of ALPS

Interventions

Valproic Acid

Oral administration of valproic acid

Intervention Type: DRUG

CT Scan

CT scans were done before and after treating the patient with valproic acid

Intervention Type: PROCEDURE

Blood Sample

Blood samples were collected before and after the intervention to monitor blood counts and biomarkers of ALPS

Intervention Type: PROCEDURE

Other Intervention Names

Depakote; Computerized Tomography

Eligibility Criteria

Inclusion Criteria

1. All subjects must fulfill the published criteria for the diagnosis of ALPS (documented nonmalignant lymphadenopathy and/or splenomegaly of at least 1-year duration; greater than1% TCR alpha/beta+ CD4-CD8- T cells in the peripheral blood). This must include clinically documented lymphadenopathy involving more than 2 nodes in more than 1 regional group of nodes measuring greater than 2cm in size and/or a palpable spleen.

2. Age greater than or equal to 2 years through less than or equal to 70 years.

3. Must have a personal primary care physician who is willing to follow the protocol required evaluations during the study period.

4. Must be willing to sign a consent form.

Exclusion Criteria

1. A hemoglobin concentration of less than 8 gm/dL, a platelet count of less than 75 K/mm(3), or an absolute neutrophil count of less than 500/mm(3), at study entry.

2. Liver disease determined by an alanine aminotransferase (ALT), aspartate aminotransferase (AST), or bilirubin 2.5 times greater than the upper limit of normal.

3. History of pancreatitis by clinical features and/or laboratory abnormalities in the last 12 months.

4. Renal dysfunction determined by a calculated urine creatinine clearance of less than 70 mL/min/1.73 m(2) in children and less than 60 mL/min in adults, or using the Schwartz formula or Levy formula based on serum creatinine.

5. Patients clinically suspected of suffering from urea cycle disorders will be excluded.

6. Patients with history of seizure disorders and/or those already receiving valproic acid will be excluded.

7. Sensitive to or have ever had an allergic reaction to Depakote.

8. Not able to abstain from alcohol during the length of the study.

9. Pregnancy. Female adults and adolescents who have attained menarche must have a negative pregnancy test at study entry and commit to using an acceptable method of barrier or hormonal contraception (e.g., condoms, diaphragms, oral contraceptives, or long acting progestin agents) if sexually active during the study and for 3 months after the last dose of valproic acid.

10. Lactating mothers who are breast feeding their babies will not be eligible.

11. ALPS patients who have been treated with bone marrow toxic chemotherapy regimens for Non-Hodgkin's lymphoma or other malignancies are not eligible for this pilot study.

• Minimum Eligible Age: 2 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Koneti Rao

NIH

Sponsor Role: lead

Responsible Party

Koneti Rao

Staff physician

Responsibility Role: SPONSOR_INVESTIGATOR

Principal Investigators

Koneti Rao, MD

Role: PRINCIPAL_INVESTIGATOR

DIR, NIAID, NIH

Locations

National Institutes of Health Clinical Center, 9000 Rockville Pike

Bethesda, Maryland, United States

Countries

United States

References

Sneller MC, Straus SE, Jaffe ES, Jaffe JS, Fleisher TA, Stetler-Stevenson M, Strober W. A novel lymphoproliferative/autoimmune syndrome resembling murine lpr/gld disease. J Clin Invest. 1992 Aug;90(2):334-41. doi: 10.1172/JCI115867.

Reference Type: BACKGROUND

PMID: 1386609 (View on PubMed)

Rao VK, Straus SE. Causes and consequences of the autoimmune lymphoproliferative syndrome. Hematology. 2006 Feb;11(1):15-23. doi: 10.1080/10245330500329094.

Reference Type: BACKGROUND

PMID: 16522544 (View on PubMed)

Rao VK, Carrasquillo JA, Dale JK, Bacharach SL, Whatley M, Dugan F, Tretler J, Fleisher T, Puck JM, Wilson W, Jaffe ES, Avila N, Chen CC, Straus SE. Fluorodeoxyglucose positron emission tomography (FDG-PET) for monitoring lymphadenopathy in the autoimmune lymphoproliferative syndrome (ALPS). Am J Hematol. 2006 Feb;81(2):81-5. doi: 10.1002/ajh.20523.

Reference Type: BACKGROUND

PMID: 16432855 (View on PubMed)

Other Identifiers

08-I-0053

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

080053

Identifier Type: -

Identifier Source: org_study_id