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Sellar TumorPhase 2EEEA-AMSBPNCT07539792

Efficacy and Safety Evaluation of Absorbable and Moldable Skull Base Support Plates in Extended Endoscopic Endonasal Transsphenoidal Surgery: A Prospective, Randomized, Controlled Study

A Phase 2 study testing Absorbable and moldable skull base support plate in people with Sellar Tumor and Endonasal Surgery, run by Nanfang Hospital, Southern Medical University at 8 sites in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

Primary objective: To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the incidence of cerebrospinal fluid (CSF) rhinorrhea within 1 month after surgery. Secondary objectives: 1. Read more about this study

Who is it for?
Ages 1 year to 80 years
Conditions the study is for
Sellar Tumor, Endonasal Surgery, Csf Leakage
What is being tested?
Absorbable and moldable skull base support plate
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
126 participants
Where
8 sitesChina
Study dates
1 Apr 2026to 28 Feb 2030
Phase
Phase 2
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 year to 80 years
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Aged 1-80 years, regardless of gender;
  • Diagnosed with sellar region tumors confirmed by clinical symptoms, endocrine examinations, and imaging data;
  • Planned to undergo extended endoscopic endonasal transsphenoidal approach surgery as determined by departmental discussion;
  • Karnofsky Performance Status score ≥ 70, with an expected survival period ≥ 24 months;
  • Laboratory indicators (such as liver and kidney function, blood routine, etc.) within the normal range or controllable range;
  • Sign the informed consent form and are willing to participate in the study.

Who cannot join

  • Patients with other concurrent intracranial tumors or severe brain lesions;
  • Patients scheduled to undergo craniotomy or non-extended endoscopic endonasal transsphenoidal surgery;
  • Patients with uncontrolled severe heart, lung, kidney, or liver diseases;
  • Pregnant or lactating women;
  • Patients who have previously received radiotherapy or chemotherapy;
  • Patients with active nasal infections, inflammation, or severe nasal diseases;
Show all 9Show fewer
  • Patients with a history of severe allergies to drugs or synthetic materials;
  • Patients with extensive skull base bone destruction evaluated by preoperative imaging, for whom it is estimated that support materials cannot be used during surgery;
  • Patients with mental illness or cognitive impairment who are unable to complete follow-up or understand the purpose of the study.

Trial locations and contacts

8 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Jun Pan MD, Ph.D contact

+86-13076878155

1448875873@qq.com

8 sites in 1 country

China8 sites, 8 recruiting
  • The First People's Hospital Of Foshan

    Foshan, Guangdong

    Lianxu Cui, +86-18038863001, cuilianxu@qq.com

    Lianxu Cui

    Not yet recruiting
  • Gaozhou People's Hospital

    Gaozhou, Guangdong

    Linfan Li, +86-138 2488 0022

    lmj1006@yeah.net

    Not yet recruiting
  • Sun Yat-sen University Cancer Center

    Guangzhou, Guangdong, 510060

    Xiaobing Jiang, MD, Ph.D, +86-15201253009, jiangxiaob1@sysucc.org.cn

    XIaobing Jiang, MD, Ph.D

    Not yet recruiting
  • Southern Medical University, Nanfang Hospital, Department of Neurosurgery

    Guangzhou, Guangdong, 510515

    Jun Pan, MD, Ph.D

    Mingfeng Zhou, Ph.D

    Recruiting
  • Guangdong Provincial Hospital of Traditional Chinese Medicine

    Guangzhou, Guangdong

    Tao Huang, +86-18688898958, arteries@163.com

    Tao Huang

    Not yet recruiting
  • Huizhou Central People's Hospital

    Huizhou, Guangdong

    Honghai Luo, Master of Medical Science, +86-15820717999, luohonghai999@sohu.com

    Honghai Luo, Master of Medical Science

    Not yet recruiting
  • Liuzhou people's hospital

    Liuzhou, Guangxi

    Yuanliang Ye, +86-13667726163, yeyuanliangy@163.com

    Yuanliang Ye

    Not yet recruiting
  • The First People's Hospital of Zhaoqing

    Zhaoqing, Guangdong

    Haibin Li, +86-13560917978, Lihaibin08@126.com

    Haibin Li

    Not yet recruiting

Other trials in China

About this study

Primary objective: To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the incidence of cerebrospinal fluid (CSF) rhinorrhea within 1 month after surgery.

Secondary objectives:

  1. To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the incidence of intracranial infection within 1 months after surgery;
  2. To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the duration of the surgery and length of postoperative hospital stay;
  3. To monitor and evaluate the safety of absorbable and moldable skull base support plates, especially the occurrence of nasal complications.
Read the detailed description

This is a multicenter, two-arm, open-label, randomized, controlled phase II clinical trial. It plans to enroll patients with sellar region tumors who will undergo extended endoscopic endonasal transsphenoidal approach. The aim is to compare the incidence of CSF rhinorrhea within 1 month after surgery between the combination of standard sellar floor repair + absorbable and moldable skull base support plate repair and the standard sellar floor repair group, and evaluate its safety and efficacy, so as to provide new strategies and basis for clinical treatment.

Statistical Analysis:

Analysis Sets:

Full Analysis Set (FAS), Per Protocol Set (PPS), and Safety Set (SS) will be used for statistical analysis.

  • Full Analysis Set (FAS): Refers to the set of all subjects who have received the trial after enrollment and have undergone at least one efficacy assessment.
  • Safety Set (SS):

Refers to the set of all subjects who have received the trial after enrollment and have undergone at least one safety indicator evaluation.

  • Per Protocol Set (PPS): The set of cases in the Full Analysis Set that have completed the trial as specified in the protocol and have no serious violations of the trial protocol.

This is a phase II clinical trial. The sample size of this study will be calculated based on the hypothesis of a 1:1 parallel design sample rate in the two groups. The specific method is to compare the incidence of CSF rhinorrhea (CSF Leakage Rate, CLR) within 1 month after surgery in the experimental group (i.e., standard sellar floor repair + absorbable and moldable skull base support plate repair group) with that in the standard sellar floor repair group. It is assumed that the CLR in the experimental group is 1% (p1=0.01) and that in the standard sellar floor repair group is 15% (p2=0.15). The significance level is set at 0.025 (one-sided test), and the power is 80%. According to literature references and study design, we expect to recruit approximately 56 subjects in each group. Allowing for a 10% loss to follow-up, the sample size will be increased to N = 126 (63 subjects per group).

All statistical analyses will be performed using SAS 9.2 statistical analysis software.

Follow-up Face-to-face oral follow-up will be conducted for patients who return to the hospital for reexamination, and telephone follow-up will be conducted for patients who cannot return to the hospital for reexamination.

Statistical Methods

Data Processing:

Data processing and analysis will be performed using SAS 9.2 statistical analysis software. All continuous variables will be expressed as mean ± standard deviation (Mean ± SD) or median (interquartile range), and categorical variables will be expressed as frequency and percentage.

Analysis of Primary Efficacy Indicators:

Incidence of CSF rhinorrhea (CLR) within 1 month after surgery: Evaluated according to clinical symptoms, imaging, and nasal endoscopy standards. Chi-square test or Fisher's exact test will be used to analyze the CLR of each group.

Analysis of Secondary Efficacy Indicators:

  • Incidence of intracranial infection within 1 month after surgery: Inter-group analysis will be performed using chi-square test or Fisher's exact test.
  • Utilization rate of autologous fascia, fat, and nasal septum mucosal flaps: Inter-group analysis will be performed using chi-square test or Fisher's exact test.
  • Length of duration of the surgery and postoperative hospital stay: Inter-group analysis will be performed using t-test or non-parametric test.

Safety Analysis:

Treatment-related adverse events will be evaluated according to the CTCAE 5.0 standard. The incidence of adverse events in each group will be analyzed using chi-square test or Fisher's exact test, and the frequency and severity of adverse events will be described by category.

Significance Level:

All statistical tests are two-sided tests, and the significance level is set at P < 0.05. P < 0.05 is considered statistically significant.

Being tested
Absorbable and moldable skull base support plate
Keywords
Sellar Tumor, Extended Endoscopic Endonasal Transsphenoidal Surgery, Cerebrospinal Fluid Rhinorrhea, Skull Base Reconstruction
Medical subject headings
Cerebrospinal Fluid Rhinorrhea

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Absorbable and moldable skull base support plateDevice

    The sbsorbable and moldable skull base support plate is used during the skull base repair phase of the surgery.

    Trimming: Measure the size of the skull base defect bone window (from the tuberculum sellae to the clival bone edge). Cut the malleable support plate slightly longer than this dimension.

    Shaping: Shape the plate according to the morphological changes of the sellar floor bone resulting from the lesion. In cases with no obvious sellar floor bone destruction (e.g., suprasellar craniopharyngioma), the support plate is shaped into a slight "S" curve to ensure tight apposition to the dural window and the inlay artificial dura, preventing the formation of intervening gaps.

    Placement: Since the support plate requires tight embedding under the anterior and posterior bone edges, bone edges at the tuberculum sellae and clivus should be preserved during sellar floor drilling according to surgical exposure and plate embedding requirements to facilitate secure fixation.

Study groups in NCT07539792
Study groupRoleWhat they receive
Standard skull base reconstruction plus the absorbable and moldable skull base support plateExperimentalThe intervention is performed during the skull base repair phase of the surgery. The sellar floor repair and reconstruction technique used in this study generally follows the multi-layer reconstruction and repair technique widely adopted in the classic endoscopic endonasal transsphenoidal approach : Assess the intraoperative grade of cerebrospinal fluid (CSF) leakage (Esposito classification). Obliterate the tumor cavity: After tumor resection, the subarachnoid space and sellar cavity are usually packed with gelatin sponge (or autologous fat in a minority of patients, etc.). Repair the dura mater: Perform routine inlay repair with an impermeable artificial biomembrane to restore the dural layer. Trimming, shaping, and placement of the skull base support plate. Covering with mucosa: Cover the outer surface of the support plate with a pedicled or free nasal septal mucosal flap, and pack and stabilize it with gelatin sponge
Receives: Device: Absorbable and moldable skull base support plate
Standard skull base reconstruction protocolNo interventionNo intervention is performed during the skull base repair phase of the surgery. The sellar floor repair and reconstruction technique used in this study generally follows the multi-layer reconstruction and repair technique widely adopted in the classic endoscopic endonasal transsphenoidal approach : Assess the intraoperative grade of cerebrospinal fluid (CSF) leakage (Esposito classification). Obliterate the tumor cavity: After tumor resection, the subarachnoid space and sellar cavity are usually packed with gelatin sponge (or autologous fat in a minority of patients, etc.). Repair the dura mater: Perform routine inlay repair with an impermeable artificial biomembrane to restore the dural layer. Cover with mucosa: Cover the outer surface of the dural layer with a pedicled or free nasal septal mucosal flap, and pack and stabilize it with gelatin sponge

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of cerebrospinal fluid (CSF) rhinorrhea

    Confirmed by combining clinical symptoms, imaging examinations, and nasal endoscopy, including but not limited to the following indicators:

    Clinical symptoms: persistent high fever (maximum temperature > 38.5 °C for more than 3 days), nausea and vomiting, decreased consciousness, positive meningeal irritation signs, etc.; Imaging examinations: CT or MRI showing fluid accumulation in the paranasal sinuses, intracranial pneumocephalus, etc.; Nasal endoscopy demonstrating persistent cerebrospinal fluid leakage from the sellar floor wound.

    Measured: Within 1 month postoperatively

Secondary outcomes (1)
  1. Incidence of intracranial infection

    Clinical symptoms: persistent high fever (maximum temperature > 38.5 °C for more than 3 days), nausea and vomiting, decreased consciousness, positive meningeal irritation signs, etc.; Confirmed by pathogenic examination of cerebrospinal fluid via lumbar puncture.

    Measured: Within 1 month postoperatively

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Apr 2026
  2. Study start1 Apr 2026
  3. Primary completion31 Mar 2029 (estimated)
  4. Study completion28 Feb 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
126 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07539792
Sponsor's protocol ID
NFEC-2026-111
Acronym
EEEA-AMSBP
Status last verified
Apr 2026
First submitted
13 Apr 2026
Last updated
20 Apr 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Absorbable and moldable skull base support plate in people with Sellar Tumor and Endonasal Surgery, run by Nanfang Hospital, Southern Medical University at 8 sites in China.

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 9 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 20 Apr 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 China. 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.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

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 Jun Pan MD, Ph.D (+86-13076878155, 1448875873@qq.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of cerebrospinal fluid (CSF) rhinorrhea (time frame: Within 1 month postoperatively). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 20 Apr 2026.

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