Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
X-linked Hypophosphatemia: early-phase trial registry
1 of 6 indexed X-linked Hypophosphatemia trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #2,866 of 28,707 conditions by registered trial count.
6 US clinical trials · 1 currently recruiting · #2,866 of 28,707 conditions by registered trial count
X-linked Hypophosphatemia: 6 US clinical trials tracked, 1 recruiting.
X-linked Hypophosphatemia is the subject of 6 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 4 in Phase 1-2 (earlier-stage). The most active sponsor is Kyowa Kirin Co., running 2 of these trials.
Enrollment posture brief
Registry condition x-linked-hypophosphatemia
OPEN 1 | RECR 17% | LATE 1 | EARLY 4 | RANK #2866 | SPON 2
Volume-matched condition peers
Nearest open-share peer: Acute Renal Failure (17% recruiting · 6 trials)
X-linked Hypophosphatemia lists 1 open slots (17% of 6 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for X-linked Hypophosphatemia on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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X-linked Hypophosphatemia is recruiting below its size-band peers.
1 of 6 indexed trials (16.7%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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One sponsor concentrates X-linked Hypophosphatemia research.
Kyowa Kirin Co. accounts for 2 of 6 trials (33.3%). 5 distinct sponsors appear on at least one study for this condition label.
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Most X-linked Hypophosphatemia trials plan to enrol fewer than 100 people.
Median target enrolment is 23 among the 6 trials that report a genuine target (sentinel values excluded). 5 of those (83.3%) plan for fewer than 100 participants.
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X-linked Hypophosphatemia research is mostly interventional.
5 interventional and 1 observational studies make up this index (83.3% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
6 total, page 1 of 1
A First-in-human Study of KK8123 in Adults With X-linked Hypophosphatemia
Kyowa Kirin Co.
NCT06525636
X-linked Hypophosphatemia Disease Monitoring Program
Ultragenyx Pharmaceutical
NCT03651505
Calcitriol Monotherapy for X-Linked Hypophosphatemia
Massachusetts General Hospital
NCT03748966
An Extension Study of KRN23 in Adults With X-Linked Hypophosphatemia
Kyowa Kirin Co.
NCT01571596
Study of the Safety, Pharmacodynamics (PD) and Efficacy of KRN23 in Children From 1 to 4 Years Old With X-linked Hypophosphatemia (XLH)
Kyowa Kirin
NCT02750618
Examining the Effect of Burosumab on Muscle Function
Yale University
NCT04146935
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 3 |
| Phase 2 | 1 |
| Phase 4 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on X-linked Hypophosphatemia records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on X-linked Hypophosphatemia trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this X-linked Hypophosphatemia page
6 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 X-linked Hypophosphatemia trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Kyowa Kirin Co. sponsors the most X-linked Hypophosphatemia trials on record, review their full trial history before evaluating a specific study. See Kyowa Kirin Co.'s trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This X-linked Hypophosphatemia condition card totals 6 registered trials; most-linked intervention KRN23; top US site state Connecticut. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.