Frontotemporal DementiaNCT04516499
Neurofilament Surveillance Project (NSP)
An observational study of Frontotemporal Dementia and Frontotemporal Lobar Degeneration, run by The Bluefield Project to Cure Frontotemporal Dementia at 8 sites in United States.
Trial summary
This is a biomarker study designed to collect and analyze blood specimens from individuals carrying known familial frontotemporal lobar degeneration (f-FTLD) mutations compared to a control group of individuals without known f-FTLD mutations. Read more about this study
- Who is it for?
- Ages 18 to 85 yearsHealthy volunteers can take part
- Conditions the study is for
- Frontotemporal Dementia, Frontotemporal Lobar Degeneration, FTD-GRN
- How many people
- 342 participants
- Where
- 8 sitesUnited States
- Study dates
- 2 Sep 2020to Feb 2027
- 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 18 to 85 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: This study is an ancillary study to ALLFTD. Thus, all NSP participants will be recruited directly from the longitudinal arm of ALLFTD. Roughly equivalent numbers of participants will be enrolled from each of the following groups: * Members of families with known mutations in C9orf72 * Members of families with known mutations in GRN * Members of families with known mutations in MAPT Although participant must be from a family with a known mutation, the participant themselves need not know their personal mutation status.
Who may be able to join
- Male or female
- Ages 18-85
- Provision of signed and dated informed consent form
- Stated willingness to comply with all study procedures and availability for the duration of the study
- Is enrolled in the longitudinal arm of ALLFTD
- Is a member of a family with a known mutation in C9orf72, GRN or MAPT
Who cannot join
- Any permanent contra-indication to repeated blood draws, such as poor venous access.
- Any conditions or circumstances which, in the opinion of the investigator, would not allow participation in the study.
Trial locations and contacts
8 sites in 1 country.
8 sites in 1 country
United States8 sites
Johns Hopkins University School of Medicine
Baltimore, Maryland, 21287
Massachusetts General Hospital
Charlestown, Massachusetts, 02129
Mayo Clinic Florida
Jacksonville, Florida, 32224
Columbia University
New York, New York, 10032
University of Pennsylvania
Philadelphia, Pennsylvania, 19104
Mayo Clinic
Rochester, Minnesota, 55905
University of California, San Francisco
San Francisco, California, 94158
Washington University in St. Louis
St Louis, Missouri, 63110
About this study
Official title: Remote Blood Biomarker Monitoring in Frontotemporal Lobar Degeneration: Neurofilament Surveillance Project (NSP)
This is a biomarker study designed to collect and analyze blood specimens from individuals carrying known familial frontotemporal lobar degeneration (f-FTLD) mutations compared to a control group of individuals without known f-FTLD mutations. The NSP is an ancillary study to the ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration" (ALLFTD) study, NCT04363684. More information can be found at https://www.allftd.org/.
Read the detailed description
Frontotemporal Lobar Degeneration (FTLD), a group of clinically heterogeneous neurodegenerative diseases characterized by progressive deterioration of the frontal and temporal cortices as well as basal ganglia and brainstem structures, is a common cause of neurodegenerative dementia in people who are less than 60 years old at onset. It is uniformly fatal. FTLD is a rare disease, with an estimated prevalence of approximately 5-22 per 100,000. There are no approved treatments, however several investigational agents are in human trials and a variety of novel agents are poised to enter human development. Experience from other neurodegenerative diseases suggests that potential disease modifying treatments are most likely to be efficacious if initiated before the onset of symptoms.
Approximately 25% of FTLD cases are familial (f-FTLD) and due to autosomal dominant mutations in one of three genes: C9orf72, progranulin (GRN) or microtubule associated protein tau (MAPT). Many of the new therapies entering the clinic directly target one of these genetic causes and raise the possibility that the clinical features of FTLD could be delayed or prevented in these individuals if an efficacious therapy was initiated prior to the onset of symptoms. The major barrier to determining efficacy of novel therapeutic agents for f-FTLD in such prevention trials is the lack of an endpoint that can indicate therapeutic efficacy prior to the onset of symptoms. Our preliminary data strongly suggest that plasma neurofilament light chain (NfL) could serve as such a biomarker.
This non-interventional study is in preparation for pivotal clinical trials. Up to 335 participants will provide blood remotely via visits from traveling mobile research nurses four times a year for three years (4355 samples total) to enable the observation of peripheral NfL levels longitudinally during disease onset and progression, with the ultimate goal of qualifying plasma NfL as an endpoint for f-FTLD prevention trials. The NSP study is an ancillary study to ALLFTD, and biomarker data collected in the NSP will be correlated with ALLFTD clinical data. More information on the NSP study may be found at https://www.allftd.org/nsp.
- Conditions
- Frontotemporal Dementia, Frontotemporal Lobar Degeneration, FTD-GRN, FTD, FTLD
- Keywords
- C9orf72, GRN, MAPT
- Medical subject headings
- Frontotemporal Dementia, Frontotemporal Lobar Degeneration, Frontotemporal Dementia With Motor Neuron Disease
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 |
|---|---|---|
| f-FTLD mutation carriers | All participants must be from a family with f-FTLD mutations. The f-FTLD mutation carrier group members will have their genetic status tested and included in this group if a f-FTLD mutation is observed. Participants do not need to know or be told their genetic status. | |
| Non-mutation carriers from families with f-FTLD mutations | All participants must be from a family with f-FTLD mutations. The non-mutation carrier group members will have their genetic status tested and included in this group if they do not have a f-FTLD mutation. Participants do not need to know or be told their genetic status. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Neurofilament Light Chain Levels
To determine the longitudinal stability of plasma neurofilament light chain (NfL) measured every 3 months for 36 months in individuals at-risk for symptomatic FTLD
Measured: 36 months
Secondary outcomes (2)
Intersubject variability of plasma NfL measurements
Concentration of plasma neurofilament light chain protein
Measured: 36 months
Logistics measure
Participant compliance with scheduled remote blood collection and sample processing
Measured: 36 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Aug 2020
- Study start2 Sep 2020
- Primary completionFeb 2027 (estimated)
- Study completionFeb 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Frontotemporal DementiaStudies 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
- Family based
- Time perspective
- Prospective
- Enrolment
- 342 participants (actual)
Sponsor and investigators
- Lead sponsor
- The Bluefield Project to Cure Frontotemporal Dementia
- Sponsor type
- University, hospital or other
- Collaborators
- Mayo Clinic, University of California, San Francisco
- Responsible party
- Sponsor
- Investigators
- Adam Boxer, MD, PhD, Principal investigator, University of California, San FranciscoBradley Boeve, MD, Principal investigator, Mayo ClinicHowie Rosen, MD, Principal investigator, University of California, San FranciscoLaura Mitic, PhD, Study director, The Bluefield Project to Cure Frontotemporal Dementia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04516499
- Sponsor's protocol ID
- NSP001
- Status last verified
- Jun 2026
- First submitted
- 11 Aug 2020
- Last updated
- 18 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided: Please consult with ALLFTD regarding individual participant data.
Publications
Saracino D, Dorgham K, Camuzat A, Rinaldi D, Rametti-Lacroux A, Houot M, Clot F, Martin-Hardy P, Jornea L, Azuar C, Migliaccio R, Pasquier F, Couratier P, Auriacombe S, Sauvee M, Boutoleau-Bretonniere C, Pariente J, Didic M, Hannequin D, Wallon D; French Research Network on FTD/FTD-ALS; PREV-DEMALS and Predict-PGRN study groups; Colliot O, Dubois B, Brice A, Levy R, Forlani S, Le Ber I. Plasma NfL levels and longitudinal change rates in C9orf72 and GRN-associated diseases: from tailored references to clinical applications. J Neurol Neurosurg Psychiatry. 2021 Dec;92(12):1278-1288. doi: 10.1136/jnnp-2021-326914. Epub 2021 Aug 4.
PubMed 34349004Wilke C, Reich S, van Swieten JC, Borroni B, Sanchez-Valle R, Moreno F, Laforce R, Graff C, Galimberti D, Rowe JB, Masellis M, Tartaglia MC, Finger E, Vandenberghe R, de Mendonca A, Tagliavini F, Santana I, Ducharme S, Butler CR, Gerhard A, Levin J, Danek A, Otto M, Frisoni G, Ghidoni R, Sorbi S, Bocchetta M, Todd E, Kuhle J, Barro C; Genetic Frontotemporal dementia Initiative (GENFI); Rohrer JD, Synofzik M. Stratifying the Presymptomatic Phase of Genetic Frontotemporal Dementia by Serum NfL and pNfH: A Longitudinal Multicentre Study. Ann Neurol. 2022 Jan;91(1):33-47. doi: 10.1002/ana.26265. Epub 2021 Nov 29.
PubMed 34743360Rojas JC, Wang P, Staffaroni AM, Heller C, Cobigo Y, Wolf A, Goh SM, Ljubenkov PA, Heuer HW, Fong JC, Taylor JB, Veras E, Song L, Jeromin A, Hanlon D, Yu L, Khinikar A, Sivasankaran R, Kieloch A, Valentin MA, Karydas AM, Mitic LL, Pearlman R, Kornak J, Kramer JH, Miller BL, Kantarci K, Knopman DS, Graff-Radford N, Petrucelli L, Rademakers R, Irwin DJ, Grossman M, Ramos EM, Coppola G, Mendez MF, Bordelon Y, Dickerson BC, Ghoshal N, Huey ED, Mackenzie IR, Appleby BS, Domoto-Reilly K, Hsiung GR, Toga AW, Weintraub S, Kaufer DI, Kerwin D, Litvan I, Onyike CU, Pantelyat A, Roberson ED, Tartaglia MC, Foroud T, Chen W, Czerkowicz J, Graham DL, van Swieten JC, Borroni B, Sanchez-Valle R, Moreno F, Laforce R, Graff C, Synofzik M, Galimberti D, Rowe JB, Masellis M, Finger E, Vandenberghe R, de Mendonca A, Tagliavini F, Santana I, Ducharme S, Butler CR, Gerhard A, Levin J, Danek A, Otto M, Sorbi S, Cash DM, Convery RS, Bocchetta M, Foiani M, Greaves CV, Peakman G, Russell L, Swift I, Todd E, Rohrer JD, Boeve BF, Rosen HJ, Boxer AL; ALLFTD and GENFI consortia. Plasma Neurofilament Light for Prediction of Disease Progression in Familial Frontotemporal Lobar Degeneration. Neurology. 2021 May 4;96(18):e2296-e2312. doi: 10.1212/WNL.0000000000011848. Epub 2021 Apr 7.
PubMed 33827960Gendron TF, Heckman MG, White LJ, Veire AM, Pedraza O, Burch AR, Bozoki AC, Dickerson BC, Domoto-Reilly K, Foroud T, Forsberg LK, Galasko DR, Ghoshal N, Graff-Radford NR, Grossman M, Heuer HW, Huey ED, Hsiung GR, Irwin DJ, Kaufer DI, Leger GC, Litvan I, Masdeu JC, Mendez MF, Onyike CU, Pascual B, Ritter A, Roberson ED, Rojas JC, Tartaglia MC, Wszolek ZK, Rosen H, Boeve BF, Boxer AL; ALLFTD consortium; Petrucelli L. Comprehensive cross-sectional and longitudinal analyses of plasma neurofilament light across FTD spectrum disorders. Cell Rep Med. 2022 Apr 19;3(4):100607. doi: 10.1016/j.xcrm.2022.100607. eCollection 2022 Apr 19.
PubMed 35492244
Study at a glance
From the registry record, last updated by the sponsor on 18 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Remote Blood Biomarker Monitoring in Frontotemporal Lobar Degeneration: Neurofilament Surveillance Project (NSP)
- ClinicalTrials.gov ID
- NCT04516499
- Acronym / sponsor ID
- NSP001
- Conditions
- Frontotemporal Dementia, Frontotemporal Lobar Degeneration, FTD-GRN, FTD, FTLD
- Keywords
- C9orf72, GRN, MAPT
- Study type
- Observational
- Recruitment status
- Active, not recruiting
- Enrolment
- 342 participants (actual)
- Lead sponsor
- The Bluefield Project to Cure Frontotemporal DementiaUniversity, hospital or other
- Collaborators
- Mayo Clinic, University of California, San Francisco
- Study start
- 2 Sep 2020 (actual)
- Primary completion
- Feb 2027 (estimated)
- Study completion
- Feb 2027 (estimated)
- First posted
- 18 Aug 2020 (actual)
- 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.
This is a biomarker study designed to collect and analyze blood specimens from individuals carrying known familial frontotemporal lobar degeneration (f-FTLD) mutations compared to a control group of individuals without known f-FTLD mutations. The NSP is an ancillary study to the ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration" (ALLFTD) study, NCT04363684. More information can be found at https://www.allftd.org/.
Detailed description
Frontotemporal Lobar Degeneration (FTLD), a group of clinically heterogeneous neurodegenerative diseases characterized by progressive deterioration of the frontal and temporal cortices as well as basal ganglia and brainstem structures, is a common cause of neurodegenerative dementia in people who are less than 60 years old at onset. It is uniformly fatal. FTLD is a rare disease, with an estimated prevalence of approximately 5-22 per 100,000. There are no approved treatments, however several investigational agents are in human trials and a variety of novel agents are poised to enter human development. Experience from other neurodegenerative diseases suggests that potential disease modifying treatments are most likely to be efficacious if initiated before the onset of symptoms.
Approximately 25% of FTLD cases are familial (f-FTLD) and due to autosomal dominant mutations in one of three genes: C9orf72, progranulin (GRN) or microtubule associated protein tau (MAPT). Many of the new therapies entering the clinic directly target one of these genetic causes and raise the possibility that the clinical features of FTLD could be delayed or prevented in these individuals if an efficacious therapy was initiated prior to the onset of symptoms. The major barrier to determining efficacy of novel therapeutic agents for f-FTLD in such prevention trials is the lack of an endpoint that can indicate therapeutic efficacy prior to the onset of symptoms. Our preliminary data strongly suggest that plasma neurofilament light chain (NfL) could serve as such a biomarker.
This non-interventional study is in preparation for pivotal clinical trials. Up to 335 participants will provide blood remotely via visits from traveling mobile research nurses four times a year for three years (4355 samples total) to enable the observation of peripheral NfL levels longitudinally during disease onset and progression, with the ultimate goal of qualifying plasma NfL as an endpoint for f-FTLD prevention trials. The NSP study is an ancillary study to ALLFTD, and biomarker data collected in the NSP will be correlated with ALLFTD clinical data. More information on the NSP study may be found at https://www.allftd.org/nsp.
Study design
- Observational model
- Family based
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| f-FTLD mutation carriers | – | –All participants must be from a family with f-FTLD mutations. The f-FTLD mutation carrier group members will have their genetic status tested and included in this group if a f-FTLD mutation is observed. Participants do not need to know or be told their genetic status. |
| Non-mutation carriers from families with f-FTLD mutations | – | –All participants must be from a family with f-FTLD mutations. The non-mutation carrier group members will have their genetic status tested and included in this group if they do not have a f-FTLD mutation. Participants do not need to know or be told their genetic status. |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- This study is an ancillary study to ALLFTD. Thus, all NSP participants will be recruited directly from the longitudinal arm of ALLFTD. Roughly equivalent numbers of participants will be enrolled from each of the following groups: * Members of families with known mutations in C9orf72 * Members of families with known mutations in GRN * Members of families with known mutations in MAPT Although participant must be from a family with a known mutation, the participant themselves need not know their personal mutation status.
Key inclusion criteria (6 listed)
- Male or female
- Ages 18-85
- Provision of signed and dated informed consent form
- Stated willingness to comply with all study procedures and availability for the duration of the study
- Is enrolled in the longitudinal arm of ALLFTD
Key exclusion criteria (2 listed)
- Any permanent contra-indication to repeated blood draws, such as poor venous access.
- Any conditions or circumstances which, in the opinion of the investigator, would not allow participation in the study.
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
Neurofilament Light Chain Levels
Time frame: 36 months
To determine the longitudinal stability of plasma neurofilament light chain (NfL) measured every 3 months for 36 months in individuals at-risk for symptomatic FTLD
2 secondary outcomes
Intersubject variability of plasma NfL measurements
Time frame: 36 months
Logistics measure
Time frame: 36 months
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 18 Jun 2026.
- Background: PubMed 34349004Saracino D, Dorgham K, Camuzat A, Rinaldi D, Rametti-Lacroux A, Houot M, Clot F, Martin-Hardy P, Jornea L, Azuar C, Migliaccio R, Pasquier F, Couratier P, Auriacombe S, Sauvee M, Boutoleau-Bretonniere C, Pariente J, Didic M, Hannequin D, Wallon D; French Research Network on FTD/FTD-ALS; PREV-DEMALS and Predict-PGRN study groups; Colliot O, Dubois B, Brice A, Levy R, Forlani S, Le Ber I. Plasma NfL levels and longitudinal change rates in C9orf72 and GRN-associated diseases: from tailored references to clinical applications. J Neurol Neurosurg Psychiatry. 2021 Dec;92(12):1278-1288. doi: 10.1136/jnnp-2021-326914. Epub 2021 Aug 4.
- Background: PubMed 34743360Wilke C, Reich S, van Swieten JC, Borroni B, Sanchez-Valle R, Moreno F, Laforce R, Graff C, Galimberti D, Rowe JB, Masellis M, Tartaglia MC, Finger E, Vandenberghe R, de Mendonca A, Tagliavini F, Santana I, Ducharme S, Butler CR, Gerhard A, Levin J, Danek A, Otto M, Frisoni G, Ghidoni R, Sorbi S, Bocchetta M, Todd E, Kuhle J, Barro C; Genetic Frontotemporal dementia Initiative (GENFI); Rohrer JD, Synofzik M. Stratifying the Presymptomatic Phase of Genetic Frontotemporal Dementia by Serum NfL and pNfH: A Longitudinal Multicentre Study. Ann Neurol. 2022 Jan;91(1):33-47. doi: 10.1002/ana.26265. Epub 2021 Nov 29.
- Background: PubMed 33827960Rojas JC, Wang P, Staffaroni AM, Heller C, Cobigo Y, Wolf A, Goh SM, Ljubenkov PA, Heuer HW, Fong JC, Taylor JB, Veras E, Song L, Jeromin A, Hanlon D, Yu L, Khinikar A, Sivasankaran R, Kieloch A, Valentin MA, Karydas AM, Mitic LL, Pearlman R, Kornak J, Kramer JH, Miller BL, Kantarci K, Knopman DS, Graff-Radford N, Petrucelli L, Rademakers R, Irwin DJ, Grossman M, Ramos EM, Coppola G, Mendez MF, Bordelon Y, Dickerson BC, Ghoshal N, Huey ED, Mackenzie IR, Appleby BS, Domoto-Reilly K, Hsiung GR, Toga AW, Weintraub S, Kaufer DI, Kerwin D, Litvan I, Onyike CU, Pantelyat A, Roberson ED, Tartaglia MC, Foroud T, Chen W, Czerkowicz J, Graham DL, van Swieten JC, Borroni B, Sanchez-Valle R, Moreno F, Laforce R, Graff C, Synofzik M, Galimberti D, Rowe JB, Masellis M, Finger E, Vandenberghe R, de Mendonca A, Tagliavini F, Santana I, Ducharme S, Butler CR, Gerhard A, Levin J, Danek A, Otto M, Sorbi S, Cash DM, Convery RS, Bocchetta M, Foiani M, Greaves CV, Peakman G, Russell L, Swift I, Todd E, Rohrer JD, Boeve BF, Rosen HJ, Boxer AL; ALLFTD and GENFI consortia. Plasma Neurofilament Light for Prediction of Disease Progression in Familial Frontotemporal Lobar Degeneration. Neurology. 2021 May 4;96(18):e2296-e2312. doi: 10.1212/WNL.0000000000011848. Epub 2021 Apr 7.
- Background: PubMed 35492244Gendron TF, Heckman MG, White LJ, Veire AM, Pedraza O, Burch AR, Bozoki AC, Dickerson BC, Domoto-Reilly K, Foroud T, Forsberg LK, Galasko DR, Ghoshal N, Graff-Radford NR, Grossman M, Heuer HW, Huey ED, Hsiung GR, Irwin DJ, Kaufer DI, Leger GC, Litvan I, Masdeu JC, Mendez MF, Onyike CU, Pascual B, Ritter A, Roberson ED, Rojas JC, Tartaglia MC, Wszolek ZK, Rosen H, Boeve BF, Boxer AL; ALLFTD consortium; Petrucelli L. Comprehensive cross-sectional and longitudinal analyses of plasma neurofilament light across FTD spectrum disorders. Cell Rep Med. 2022 Apr 19;3(4):100607. doi: 10.1016/j.xcrm.2022.100607. eCollection 2022 Apr 19.
- ALLFTD is the parent study of the NSP.Link provided by the sponsor.
- Individual participant dataSharing planned: Undecided. Please consult with ALLFTD regarding individual participant data.
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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. This study is not recruiting at the moment.
Adam Boxer, MD, PhD principal investigator
University of California, San Francisco
Bradley Boeve, MD principal investigator
Mayo Clinic
Howie Rosen, MD principal investigator
University of California, San Francisco
8 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Frontotemporal Dementia and Frontotemporal Lobar Degeneration, run by The Bluefield Project to Cure Frontotemporal Dementia at 8 sites 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 6 inclusion and 2 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: under way, not looking for participants, as of the sponsor's last update on 18 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 8 sites 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?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Neurofilament Light Chain Levels (time frame: 36 months). 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 NCT04516499, which also lists 4 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 18 Jun 2026.