Efficacy and Safety of Immune Checkpoint Inhibitors for Refractory Opportunistic Infections in AIDS
A Study on the Efficacy and Safety of Immune Checkpoint Inhibitors in the Treatment of AIDS Complicated With Refractory Opportunistic Infections
This prospective, single-arm, open-label study aims to evaluate the efficacy and safety of a PD-1 inhibitor (Sintilimab) combined with standard anti-infective therapy in patients with advanced HIV disease (AHD) who are suffering from refractory opportunistic infections (OIs).
Despite effective antiretroviral therapy (ART), some HIV patients develop severe, hard-to-treat infections (such as CMV, PCP, Tuberculosis, etc.) that do not respond to standard antimicrobial treatments. This is often due to a condition called "immune exhaustion," where the body's infection-fighting T-cells become inactive and express high levels of a protein called PD-1.
Sintilimab is an immune checkpoint inhibitor that blocks PD-1, effectively "waking up" the exhausted T-cells. While traditionally used for cancer, recent evidence suggests it can safely restore the immune system's ability to clear stubborn infections in HIV patients. In this study, eligible patients with refractory OIs and evidence of immune exhaustion will receive Sintilimab (200 mg intravenously every 3 weeks for a total of 3 doses) alongside their regular treatments. Researchers will monitor patient safety, clinical improvement, and immunological recovery.
調査の概要
研究の種類
入学 (推定)
段階
- フェーズ2
- フェーズ 1
連絡先と場所
研究連絡先
- 名前:Jun Chen
- 電話番号:021-37990333
- メール:chenjun@shaphc.org
研究場所
-
-
Shanghai Municipality
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Shanghai、Shanghai Municipality、中国、201508
- Shanghai Public Health Clinical Center
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コンタクト:
- Jun Chen
- 電話番号:021-37990333
- メール:chenjun@shaphc.org
-
-
参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
Inclusion Criteria:
Age ≥ 18 years. Confirmed HIV-1 infection.
Must have at least one opportunistic infection meeting the "refractory" criteria after currently available standard anti-infective treatment, defined as follows:
- Parvovirus B19: Hemoglobin (Hb) fails to recover (increase <10g/L) or requires transfusion maintenance, with reticulocytes persistently <1% after 4 weeks of Intravenous Immunoglobulin (IVIG) therapy.
- Cytomegalovirus (CMV): Blood/body fluid CMV-DNA decrease <1 log10 or new/worsening organ damage after 2 weeks of Ganciclovir or Foscarnet therapy.
- Mpox virus: Unhealed lesions, new lesions, necrotic coalescence, or no decrease in viral load after 14 days of Tecovirimat, Cidofovir, or Brincidofovir therapy.
- Progressive Multifocal Leukoencephalopathy (PML): Continuous deterioration of neurological symptoms or expanded lesion area on MRI after 3 months of optimized antiretroviral therapy (ART).
- Pneumocystis jirovecii pneumonia (PCP): No improvement in oxygenation index or expanded radiological lesions after 8 days of adequate SMZ-TMP therapy.
- Cryptococcal meningitis: Persistently positive cerebrospinal fluid (CSF) culture after 4 weeks of induction therapy.
- Talaromyces marneffei / Invasive Aspergillosis: Persistently positive culture or progression of radiological/clinical symptoms after 2 weeks of Amphotericin B or Voriconazole therapy.
- Mycobacterium tuberculosis (TB): Persistently positive sputum smear or culture after 2 months of standard anti-tuberculosis therapy.
- Nontuberculous mycobacteria (NTM): No improvement in clinical symptoms after 1 month of standard therapy, or culture not turning negative after 3 months.
High PD-1 expression on peripheral CD8+ T cells (>25%) OR weak pathogen-specific ELISpot response (<50 SFCs/10^6 cells).
Agreement to use highly effective contraception during the study and for 6 months after the end of the trial.
Voluntary signing of informed consent.
Exclusion Criteria:
History of active autoimmune disease or autoimmune disease requiring systemic treatment.
Prior organ transplantation or hematopoietic stem cell transplantation. Pregnant or lactating women. Known allergy or anti-drug antibodies to the study drug or its excipients. Prior treatment or exposure to any other immune checkpoint inhibitors. Received immunomodulatory or immunosuppressive therapy (excluding glucocorticoids) within 24 weeks prior to the first dose of the study drug.
Psychiatric disorders or substance abuse that may interfere with the trial. Other severe medical conditions deemed by the investigator as unsuitable for trial participation (e.g., uncontrolled severe heart, liver, or renal failure).
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的:Treatment Group
Patients with advanced HIV disease and refractory opportunistic infections receive Sintilimab combined with standard anti-infective therapy and antiretroviral therapy (ART).
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Sintilimab 200 mg dissolved in 100 ml normal saline, administered via intravenous infusion (60 minutes) once every 3 weeks for a total of 3 doses (Days 1, 22, and 43).
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Pathogen Clearance Rate
時間枠:From enrollment to the end of treatment at 9 weeks
|
The proportion of patients achieving microbiological clearance (e.g., negative culture or negative PCR) of the specific refractory opportunistic infection.
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From enrollment to the end of treatment at 9 weeks
|
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Patient Mortality Rate
時間枠:From enrollment to the end of treatment at 9 weeks
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The proportion of patients who die from any cause during the study period.
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From enrollment to the end of treatment at 9 weeks
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Incidence of Treatment-Related Adverse Events (TRAEs)
時間枠:From enrollment to the end of treatment at 9 weeks
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Safety will be assessed by recording the incidence and severity of adverse events related to the study drug, graded according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.
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From enrollment to the end of treatment at 9 weeks
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- 2026-S017
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
IPD 共有時間枠
IPD 共有アクセス基準
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
- SAP
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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