ClinicalTrials.gg
Status unknownNCT02332135Updated May 24, 2016

The Efficacy and Safety of Microwave Ablation for Mild-to-moderate Secondary Hyperparathyroidism Patients Undergoing Hemodialysis

An interventional study of microwave ablation and active vitamin D in Secondary Hyperparathyroidism and Maintenance Hemodialysis, sponsored by Wenhu Liu. Status unknown at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2016-05-24.

Sponsored by Wenhu Liu · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified May 2016), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 23 studies in Hyperparathyroidism, Secondary with a site in China — 4 open to participants now, 5 under way, 1 of them phase 3. Hyperparathyroidism, Secondary · China.

Planned enrollment
16th of 18
30 · median 158
Started
2015
with 1 other
No phase
2 of 23
1 open now
Registered
2nd of 23
by date

Among the 23 studies in Hyperparathyroidism, Secondary with a site in China, this one is the 16th largest by planned enrollment of the 18 interventional ones, is one of 2 that started in 2015, is one of 2 with no phase, and was the 2nd registered.

By phase

23 studies; the count open now beside each. This study's row is marked.

Phase 36 · 1 open
Observational5 · 1 open
Phase 25 · 1 open
Phase 14 · 0 open
No phasethis study2 · 1 open
Phase 41 · 0 open

By the year they started

First in 2009; this study’s year is marked. 2 started in 2015.

Size and results

Median enrollment 158 across the 18 interventional studies, 192 across the 5 observational. Of the 14 that completed or were terminated, 3 (21%) have results posted.

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02

Study summary

Microwave ablation, as a new method to therapy secondary hyperparathyroidism(SHPT), now is developing rapidly. However, it is still unknown whether it is effective to accept microwave ablation for hemodialysis patients with mild-to-moderate SHPT. In this prospective, randomised control and paried clinical trial study, the investigators will observe the efficiency and safety of microwave ablation in hemodialysis patients with mild-to-moderate secondary hyperparathyroidism. The patients in age-matched control group will accept active Vitamin D therapy.

Read the detailed description

Secondary hyperparathyroidism(SHPT) is common in hemodialysis(HD) patients. SHPT can damage cardiovascular system , bone system, and so forth. The treatment of SHPT of HD patients includes dietary phosphate restriction, the use of medicines, parathyroidectomy, and microwave ablation, which is a new method booming over the past decade. However, In the mainland of China, medical therapy is not always successful in achieving adequate control of SHPT. Oral medications have limitations as well as side effects. The patients may suffer from the injury of operation, hypoparathyroidism, or recurrence of hyperparathyroidism after parathyroidectomy. Moreover, the fear of operation for patients also limits its development. Thus, microwave ablation may become a valuable alternative treatment to help control SHPT in selected patients presenting with enlarged parathyroid gland(s) visible at ultrasonography. Nevertheless, nowadays there isn't a guideline for doctors to choose when to use microwave ablation to therapy SHPT. Furthermore, different experts have different views. Experts in Japan consider that, for SHPT , the earlier one takes microwave ablation, the better he may be, while others think, Just as parathyroidectomy, microwave ablation is merely used for the patient whose intact parathyroid hormone (iPTH) is more than 800pg/ml, or who has serious symptom. From their perspective, this is no proof that accepting microwave ablation for SHPT in early stage becomes better. However, as we all know, as the disease progresses, the therapy becomes increasingly difficult. Since microwave ablation is minimally invasive, safe,the investigators consider, patients who have parathyroid nodular or diffuse hyperplasia demonstrated on ultrasound imaging or radioisotope scan would get more benefit if they undergo microwave ablation the instant that SHPT is diagnosed. So, In this prospective, randomised control and paried clinical trial study, the investigators will observe the efficiency and safety of microwave ablation in hemodialysis patients with secondary hyperparathyroidism in early stage. First, the investigators detect the iPTH levels of all the patients in the investigators' blood purification center. The patients whose iPTH are between 300pg/ml and 800pg/ml and who have parathyroid nodular or diffuse hyperplasia demonstrated on ultrasound imaging or radioisotope scan are chosen to involve in this study. The patients with age-matched and iPTH between 300pg/ml and 800pg/ml were enrolled in this study. In the control group, patients will accept vitamin D to treat SHPT, according to the suggestions in K/DOQI guidelines. Meanwhile, in the microwave ablation group, patients will accept microwave ablation. Then, all of the patients will be followed for 24 months to compare the rate of achieving the target on iPTH level according to K/DOQI guidelines, the change of iPTH level after MWA,the rate of subjects developed into severe SHPT, as well as calcium and phosphorus level, Quality of Life and mortality in each group.

03

Conditions studied

  • Secondary Hyperparathyroidism
  • Maintenance Hemodialysis

Keywords

  • microwave ablation
  • maintenance hemodialysis
  • mild-to-moderate Secondary Hyperparathyroidism
04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. patients with age between 18-75 years.
  2. patients with parathyroid nodular or diffuse hyperplasia demonstrated on ultrasound imaging or radioisotope scan.
  3. patients in hemodialysis, whose iPTH is between 300pg/ml and 800pg/ml.

Exclusion criteria

Exclusion Criteria:

  1. primary or tertiary hyperparathyroidism(hyperparathyroidism after kidney transplantation).
  2. patient who underwent total parathyroidectomy.
  3. Known history of parathyroid or other neoplasias in the neck region.
  4. History of neck trauma.
  5. major surgery of neck in the last 3 months or in next 4months.
  6. pregnant or lactating woman.
  7. patients with severe liver disease and abnormal blood clotting mechanism.
  8. patients with chronic wasting disease.
  9. patients who is taking .
  10. patients who have other disorders affecting calcium and phosphorus metabolism.
  11. patients whose concurrent illnesses,disability,or geographical residence would hamper attendance at required study visit.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    microwave ablation group

    patients in ultrasonic ablation will be treated by ultrasound guided percutaneous parathyroid gland microwave ablation

    Procedure: microwave ablation

  • Active comparator
    control group

    patients in control group will be treated by active vitamin D and other general treatments according to the suggestions in K/DOQI guidelines

    Drug: active vitamin D

Interventions

  • Proceduremicrowave ablation

    First, the investigators detect the iPTH levels of all the patients in the investigators' blood purification center. The patients whose iPTH are between 300pg/ml and 800pg/ml and who have parathyroid nodular or diffuse hyperplasia demonstrated on ultrasound imaging or radioisotope scan are chosen to involve in this study. Patients are divided into 2 groups at random, the control group and the microwave ablation group. In the microwave ablation group, patients will accept microwave ablation. Oral medicines, if needed, will be taken according to the the suggestions in K/DOQI guideline.

  • Drugactive vitamin D

    The control group will be treated by active vitamin D and other general treatment,such as dietary phosphate restriction and phosphate binders,according to the suggestions in K/DOQI guideline.

06

What researchers measure

Primary outcomes

  1. Overall rate of achieving target for iPTH during the study period.

    The blood level of intact iPTH will be detected every other month for stable patients.

    Time frame: 12 months

  2. The change of iPTH level after MWA.

    The blood level of intact iPTH will be detected every other month for stable

    Time frame: 12 months

  3. The rate of subjects developed into severe SHPT

    Time frame: 12 months

Secondary outcomes

  1. Calcitriol weekly dosage.

    calcification score in every 6 months

    Time frame: 12 months

  2. Overall rate of achieving target for serum calcium and phosphorus.

    Time frame: 12 months

  3. Changes of serum calcium and phosphorus after MWA.

    The blood level of bone specific alkaline phosphatase will be detected every other months

    Time frame: 12 months

07

Study locations

1 of 1 sites recruiting
  • Beijing Friedship Hospital
    Beijing, Beijing 100050, China
    Recruiting
    • Wenhu Liu, Doctor · Contactliuwh0211@126.com · +86-01-63139144
    • Zongli Diao, Master · Sub investigator
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2015, a primary completion of Mar 2017 and a completion of Mar 2018. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 4, 2015
First posted
Jan 6, 2015
Start
Jan 2015
Primary completionEst.
Mar 2017
CompletionEst.
Mar 2018
Last update
May 24, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 24, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02332135
Lead sponsor
Wenhu Liu
Responsible party
Wenhu Liu (Professor, Beijing Friendship Hospital) — Sponsor-investigator
First posted
Jan 6, 2015
Start date
Jan 2015
Primary completion
Mar 2017 (estimated)
Completion
Mar 2018 (estimated)
Last update
May 24, 2016

Study contacts

Zongli Diao, master
Contact
diaoted@163.com
+86-01-63138579
Wenhu Liu, doctor
study chair · Beijing Friendship Hospital
Zongli Diao, master
study director · Beijing Friendship Hospital
Linxue Qian, doctor
principal investigator · Beijing Friendship Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in May 2016. You cannot join it, but the record below documents what was studied.

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