Hermansky-Pudlak Syndrome (HPS)NCT00001456
Clinical and Basic Investigations Into Hermansky-Pudlak Syndrome
An observational study of Hermansky-Pudlak Syndrome (HPS), run by National Human Genome Research Institute (NHGRI) at 1 site in United States.
Trial summary
Hermansky-Pudlak Syndrome (HPS) is an inherited disease which results in decreased pigmentation (oculocutaneous albinism), bleeding problems due to a platelet abnormality (platelet storage pool defect), and storage of an abnormal fat-protein compound (lysosomal accumulation of ceroid lipofuscin). Read more about this study
- Who is it for?
- Ages 1 month to 115 years
- Conditions the study is for
- Hermansky-Pudlak Syndrome (HPS)
- How many people
- 600 participants
- Where
- 1 siteUnited States
- Study dates
- 6 Nov 1995to not given
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 1 month to 115 years
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: HPS patients of any sex and ethnicity age 1-80 years
Who may be able to join
- Persons with HPS or family members who are their caregivers aged 1-80 years are eligible to enroll in this protocol. The diagnosis of HPS is based upon a paucity or deficiency of platelet dense bodies on whole mount electron microscopy or the identification of pathogenic variants in HPS genes by genetic testing. Some persons who have not been diagnosed with HPS may be admitted to the protocol based upon the presence of albinism and a platelet storage pool deficiency.
- Subjects participating only in the HPS Symptom Questionnaire will be at least 18 years of age.
Who cannot join
- Pregnant women and adults who are unable to provide consent are excluded.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
National Institutes of Health Clinical Center
Bethesda, Maryland, 20892
About this study
Hermansky-Pudlak Syndrome (HPS) is an inherited disease which results in decreased pigmentation (oculocutaneous albinism), bleeding problems due to a platelet abnormality (platelet storage pool defect), and storage of an abnormal fat-protein compound (lysosomal accumulation of ceroid lipofuscin).
The disease can cause poor functioning of the lungs, intestine, kidneys, or heart. The major complication of the disease is pulmonary fibrosis and typically causes death in patients ages 40 - 50 years old. The disorder is common in Puerto Rico, where many of the clinical research studies on the disease have been conducted. Neither the full extent of the disease nor the basic cause of the disease is known. There is no known treatment for HPS.
The purpose of this study is to perform research into the medical complications of HPS and begin to understand what causes these complications. Researchers will clinically evaluate patients with HPS of all ethnic backgrounds. They will obtain cells, blood components (plasma), and urine for future studies. Genetic tests (mutation analysis) to detect HPS-causing genes will also be conducted.<TAB>...
Read the detailed description
Study Description:
Hermansky-Pudlak syndrome is a rare autosomal recessive disease consisting of oculocutaneous albinism, a platelet storage pool defect and, in some patients, lysosomal accumulation of ceroid lipofuscin. Other manifestations include pulmonary fibrosis (often fatal in the fourth or fifth decade), chronic granulomatous colitis and, rarely, renal involvement or cardiomyopathy. The purpose of this protocol is to evaluate individuals with HPS, perform mutation analysis for known HPS-causing genes, search for variants in other genes responsible for HPS, and obtain specimens to analyze basic mechanisms of HPS.
Objectives:
Primary Objective: Assess the clinical severity of HPS, to study the natural history of disease, to identify variants in genes associated with HPS, and to investigate basic defect(s) in HPS and mechanisms of disease.
Study Population:
All participants will be persons with HPS, or their family members, aged 1-80 years. The enrollment ceiling is 600; we estimate that approximately 200 subjects will participate only in the HPS Symptom Questionnaire. Family members who are caregivers of affected individuals, including children, may be invited to participate in the HPS Symptom Questionnaire to provide responses related to their affected relative. We anticipate enrolling 2-10 new subjects per year under this protocol.
- Conditions
- Hermansky-Pudlak Syndrome (HPS)
- Keywords
- Albinism, Platelet Storage Pool Deficiency, Metabolic Disease, Pulmonary Fibrosis, Inflammatory Bowel Disease, Natural History
- Medical subject headings
- Hermanski-Pudlak Syndrome, Albinism, Platelet Storage Pool Deficiency, Metabolic Diseases, Pulmonary Fibrosis, Inflammatory Bowel Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| HPS | HPS patients of any sex and ethnicity age 1-80 years | |
| HPS Symptom Questionnaire | Includes both patients and family members or caregivers. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Natural History
The natural history of Hermansky-Pudlak Syndrome (HPS)
Measured: Ongoing
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Nov 1999 (estimated)
- Study start6 Nov 1995
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Hermansky-Pudlak Syndrome (HPS)Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 600 participants (estimated)
Sponsor and investigators
- Lead sponsor
- National Human Genome Research Institute (NHGRI)
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- Wendy J Introne, M.D., Principal investigator, National Human Genome Research Institute (NHGRI)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001456
- Sponsor's protocol ID
- 950193
- Other IDs
- 95-HG-0193
- Status last verified
- 4 Sep 2026
- First submitted
- 3 Nov 1999
- Last updated
- 5 Nov 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided: pending
Publications
Han CG, O'Brien KJ, Coon LM, Majerus JA, Huryn LA, Haroutunian SG, Moka N, Introne WJ, Macnamara E, Gahl WA, Malicdan MCV, Chen D, Krishnan K, Gochuico BR. Severe bleeding with subclinical oculocutaneous albinism in a patient with a novel HPS6 missense variant. Am J Med Genet A. 2018 Dec;176(12):2819-2823. doi: 10.1002/ajmg.a.40514. Epub 2018 Oct 4.
PubMed 30369044El-Chemaly S, Cheung F, Kotliarov Y, O'Brien KJ, Gahl WA, Chen J, Perl SY, Biancotto A, Gochuico BR. The Immunome in Two Inherited Forms of Pulmonary Fibrosis. Front Immunol. 2018 Jan 31;9:76. doi: 10.3389/fimmu.2018.00076. eCollection 2018.
PubMed 29445374
Study at a glance
From the registry record, last updated by the sponsor on 5 Nov 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Clinical and Basic Investigations Into Hermansky-Pudlak Syndrome
- ClinicalTrials.gov ID
- NCT00001456
- Acronym / sponsor ID
- 950193
- Conditions
- Hermansky-Pudlak Syndrome (HPS)
- Keywords
- Albinism, Platelet Storage Pool Deficiency, Metabolic Disease, Pulmonary Fibrosis, Inflammatory Bowel Disease, Natural History
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 600 participants (estimated)
- Lead sponsor
- National Human Genome Research Institute (NHGRI)US National Institutes of Health
- Study start
- 6 Nov 1995 (actual)
- First posted
- 4 Nov 1999 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Hermansky-Pudlak Syndrome (HPS) is an inherited disease which results in decreased pigmentation (oculocutaneous albinism), bleeding problems due to a platelet abnormality (platelet storage pool defect), and storage of an abnormal fat-protein compound (lysosomal accumulation of ceroid lipofuscin).
The disease can cause poor functioning of the lungs, intestine, kidneys, or heart. The major complication of the disease is pulmonary fibrosis and typically causes death in patients ages 40 - 50 years old. The disorder is common in Puerto Rico, where many of the clinical research studies on the disease have been conducted. Neither the full extent of the disease nor the basic cause of the disease is known. There is no known treatment for HPS.
The purpose of this study is to perform research into the medical complications of HPS and begin to understand what causes these complications. Researchers will clinically evaluate patients with HPS of all ethnic backgrounds. They will obtain cells, blood components (plasma), and urine for future studies. Genetic tests (mutation analysis) to detect HPS-causing genes will also be conducted.<TAB>...
Detailed description
Study Description:
Hermansky-Pudlak syndrome is a rare autosomal recessive disease consisting of oculocutaneous albinism, a platelet storage pool defect and, in some patients, lysosomal accumulation of ceroid lipofuscin. Other manifestations include pulmonary fibrosis (often fatal in the fourth or fifth decade), chronic granulomatous colitis and, rarely, renal involvement or cardiomyopathy. The purpose of this protocol is to evaluate individuals with HPS, perform mutation analysis for known HPS-causing genes, search for variants in other genes responsible for HPS, and obtain specimens to analyze basic mechanisms of HPS.
Objectives:
Primary Objective: Assess the clinical severity of HPS, to study the natural history of disease, to identify variants in genes associated with HPS, and to investigate basic defect(s) in HPS and mechanisms of disease.
Study Population:
All participants will be persons with HPS, or their family members, aged 1-80 years. The enrollment ceiling is 600; we estimate that approximately 200 subjects will participate only in the HPS Symptom Questionnaire. Family members who are caregivers of affected individuals, including children, may be invited to participate in the HPS Symptom Questionnaire to provide responses related to their affected relative. We anticipate enrolling 2-10 new subjects per year under this protocol.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| HPS | – | –HPS patients of any sex and ethnicity age 1-80 years |
| HPS Symptom Questionnaire | – | –Includes both patients and family members or caregivers. |
Who may qualify
- Ages
- 1 month to 115 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- HPS patients of any sex and ethnicity age 1-80 years
Key inclusion criteria (2 listed)
- Persons with HPS or family members who are their caregivers aged 1-80 years are eligible to enroll in this protocol. The diagnosis of HPS is based upon a paucity or deficiency of platelet dense bodies on whole mount electron microscopy or the identification of pathogenic variants in HPS genes by genetic testing. Some persons who have not been diagnosed with HPS may be admitted to the protocol based upon the presence of albinism and a platelet storage pool deficiency.
- Subjects participating only in the HPS Symptom Questionnaire will be at least 18 years of age.
Key exclusion criteria (1 listed)
- Pregnant women and adults who are unable to provide consent are excluded.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Natural History
Time frame: Ongoing
The natural history of Hermansky-Pudlak Syndrome (HPS)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Nov 2026.
- Derived from this study: PubMed 30369044Han CG, O'Brien KJ, Coon LM, Majerus JA, Huryn LA, Haroutunian SG, Moka N, Introne WJ, Macnamara E, Gahl WA, Malicdan MCV, Chen D, Krishnan K, Gochuico BR. Severe bleeding with subclinical oculocutaneous albinism in a patient with a novel HPS6 missense variant. Am J Med Genet A. 2018 Dec;176(12):2819-2823. doi: 10.1002/ajmg.a.40514. Epub 2018 Oct 4.
- Derived from this study: PubMed 29445374El-Chemaly S, Cheung F, Kotliarov Y, O'Brien KJ, Gahl WA, Chen J, Perl SY, Biancotto A, Gochuico BR. The Immunome in Two Inherited Forms of Pulmonary Fibrosis. Front Immunol. 2018 Jan 31;9:76. doi: 10.3389/fimmu.2018.00076. eCollection 2018.
- NIH Clinical Center Detailed Web PageLink provided by the sponsor.
- Individual participant dataSharing planned: Undecided. pending
Related trials for Hermansky-Pudlak Syndrome (HPS)
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Wendy J Introne, M.D. principal investigator
National Human Genome Research Institute (NHGRI)
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hermansky-Pudlak Syndrome (HPS), run by National Human Genome Research Institute (NHGRI) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 5 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Wendy J Introne, M.D. ((301) 451-8879, wi2p@nih.gov), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Natural History (time frame: Ongoing). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001456, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Nov 2026.