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10月21日至25日,2026年美国肾脏病学会肾脏周(ASN Kidney Week 2026)在美国丹佛举行。作为全球规模最大、最具权威性的肾脏病学年度学术盛会,本届大会汇聚了全球超万名专业人士。
麦科医药(02335.HK)自主研发的全球首创(First-in-Class)MasR/GLP-1R/GCGR三靶点激动剂XTL6001成功入选大会壁报展示。这是继ADA 2026两项壁报、EASD 2026两项壁报之后,XTL6001年内第三次登上国际顶级学术舞台,标志着其独特的“多靶点协同”机制获得了国际代谢及肾脏病学界的持续高度认可,也开启了从代谢领域向肾脏保护的加速跨越,覆盖更广阔的临床领域。
直面临床痛点:
高尿酸合并慢性肾脏病亟待“多效合一”的破局者
慢性肾脏病(CKD)是全球性的重大公共卫生挑战。据《柳叶刀》发表的全球疾病负担研究数据,全球成人慢性肾脏病患病率已达14.2%,患者总数高达7.88亿[1]。观察性研究显示高尿酸血症与CKD的快速进展密切相关,合并高尿酸血症的CKD患者需要同时进行尿酸控制与肾脏保护,这代表着一个关键且尚未被满足的临床需求[2]。
然而,现有治疗手段难以覆盖这一诉求:蛋白尿、肾小球滤过功能丧失与代谢功能障碍三者相互促进,形成复杂的恶性闭环,而单靶点药物往往只能覆盖闭环中的一环。[3]如何在同一款药物上实现“降尿酸”与“护肾脏”的协同,成为肾脏病与代谢领域共同关注的命题。
单药“三合一”:一条分子链上补齐三个关键环节
XTL6001是麦科医药自主研发的全球首创(First-in-Class)MasR/GLP-1R/GCGR三重受体激动剂,为重组人三靶点激动肽Fc融合蛋白。它并未止步于主流药物惯用的GLP-1通路,而是创新性地引入了具有抗炎、抗纤维化及肾脏保护意义的MasR通路[4]——三条通路各司其职、协同作战:
MasR通路(核心差异点):作为Ang-(1-7)的受体,MasR可介导保护性的ACE2/Ang-(1-7)/MasR轴,拮抗过度激活的ACE/Ang II/AT1R轴,直接降低肾小球内压,发挥抗炎、抗纤维化作用,并保护肾小球滤过屏障[4]。
GCGR 通路:调节肾脏尿酸转运、增强尿酸排泄,同时抑制肝脏嘌呤代谢,从 "生成" 与 "排出" 两端共同降低尿酸负荷 [5、6]。
GLP-1R 通路:改善胰岛素敏感性、减轻体重,从源头优化影响肾脏的全身代谢环境;同时发挥抗炎、抗纤维化作用,并通过利钠驱动增强尿酸排泄 [7]。
三条通路的组合,使 XTL6001 得以在单一分子上全面拦截 CKD / 糖尿病肾病(DKD)的致病级联反应 ——从代谢紊乱、肾实质损伤到肾功能恶化,形成 "代谢改善(含降尿酸)+降低尿蛋白+肾功能保护" 的多维治疗矩阵;壁报数据支持其对 "血尿酸— 尿蛋白 — 肾功能保护" 全链条的干预。
壁报核心数据:临床前与首次人体双重验证
本次ASN壁报(TH-PO0252)系统展示了XTL6001在肾脏保护领域的核心临床前及临床数据:
临床前研究:多维度肾脏保护证据一致
在三种不同的经典肾脏疾病动物模型中,XTL6001均展现出一致的肾脏保护效应——剂量依赖性降低蛋白尿、改善高滤过状态、保护肾功能并显著降低肾脏指数。它首次以单一分子药物,从改善全身代谢紊乱、减轻肾脏血流动力学异常,到延缓肾功能衰退,逐一掐断了慢性肾脏病这条相互强化的恶性闭环。
首次人体临床:降尿酸信号明确,安全性良好
在健康成人中开展的随机、双盲、安慰剂对照 I 期研究(NCT07205432)显示:
01
强效持久降尿酸:每周给药至第22天,血清尿酸较基线下降约 20%;停药5周后,仍较基线低约 11%。
02
促进尿酸排泄:D22 时 XTL6001 组尿酸清除率较基线升高 +12%,而安慰剂组下降 −28%—— 相对安慰剂的差值为 +40%。
03
药代动力学特征可预测:Tmax 12–36 h,t½ 约 24–29 h,单次与多次给药后半衰期一致,无蓄积;BMI 越高降尿酸效应越显著。
04
安全性良好:未报告严重不良事件(SAEs);多数 AE 为 1–2 级,胃肠道 AE 呈剂量依赖性且可控,局部耐受性良好;未检测到治疗期抗药抗体(ADA),免疫原性风险低,为后续长期给药奠定了坚实基础。
综合临床前与首次人体数据,XTL6001作为全球首创的MasR/GCGR/GLP-1R三靶点激动剂,在代谢调控之外兼具直接的肾脏保护作用,有望以单药形式填补高尿酸血症合并慢性肾脏病人群“既需控尿酸、又需护肾脏”的治疗空白。麦科医药将持续推进XTL6001的临床开发,期待这款源自中国的创新药早日为全球慢性肾脏病及代谢性疾病患者带来全新的治疗选择。
重要提示
XTL6001尚处于临床试验阶段,未获批上市;本文所引数据来自早期探索性研究,不等同于最终临床结论,不构成任何用药推荐。所有治疗决策请遵从专科医生指导。
参考文献
[1] GBD 2023 Chronic Kidney Disease Collaborators. Global, regional, and national burden of chronic kidney disease in adults, 1990-2023, and its attributable risk factors: a systematic analysis for the Global Burden of Disease Study 2023. The Lancet. 2025;406(10518):2461-2482.
[2] Li L, et al. BMC Nephrol. 2014;15:122.
[3] Astor BC, Matsushita K, Gansevoort RT, et al. Kidney Int. 2011;79(12):1331-1340.
[4] Silveira KD, et al. PLoS One. 2013;8(6):e66082.
[5] Yamamoto T, et al. J Rheumatol. 1997;24(4):708-713.
[6] Ren Y, et al. Mazdutide, a dual GLP-1R/GCGR agonist, inhibits hepatic purine metabolism. Diabetes. 2025;74(Suppl 1):775-P.
[7] Najafi S, et al. Br J Clin Pharmacol. 2022;88(8):3627-3637.
MICOT
ASN Kidney Week 2026, the annual meeting of the American Society of Nephrology, was held in Denver, Colorado, USA, from October 21 to 25. As the world's largest and most authoritative annual scientific meeting in nephrology, this year's meeting brought together more than 10,000 professionals from around the world.
XTL6001, a first-in-class MasR/GLP-1R/GCGR triple agonist independently developed by Micot (02335.HK), was selected for poster presentation at the meeting. Following two poster presentations at ADA 2026 and two at EASD 2026, this marks the third time this year that XTL6001 has been featured at a leading international scientific congress. It reflects the sustained recognition of its distinctive "multitarget synergy" mechanism by the international metabolic and nephrology communities, and signals an accelerated extension of its development from metabolic disease into renoprotection, encompassing a broader range of clinical indications.
Confronting an Unmet Clinical Need: Hyperuricemia with Chronic Kidney Disease Calls for a "Multiple Benefits in One" Solution
Chronic kidney disease (CKD) is a major global public health challenge. According to the Global Burden of Disease Study published in The Lancet, the global prevalence of CKD among adults has reached 14.2%, affecting a total of 788 million individuals.[1] Observational studies have shown that hyperuricemia is closely associated with rapid progression of CKD; patients with CKD and concomitant hyperuricemia require both urate control and renoprotection, representing a critical unmet clinical need.[2]
However, existing therapies fall short of meeting this need. Proteinuria, loss of glomerular filtration function and metabolic dysfunction reinforce one another, forming a complex vicious cycle, and single-target agents typically address only one component of this cycle.[3] How to achieve synergistic urate lowering and renoprotection with a single agent has therefore become a shared question in nephrology and metabolic medicine.
A Three-in-One Single Agent: Addressing Three Key Pathways with One Molecule
XTL6001, independently developed by Micot, is a first-in-class MasR/GLP-1R/GCGR triple receptor agonist—a recombinant human triple-agonist peptide Fc fusion protein. Rather than relying solely on the GLP-1 pathway used by mainstream agents, it innovatively incorporates the MasR pathway, which has anti-inflammatory, antifibrotic and renoprotective relevance.[4] The three pathways play distinct and complementary roles:
• MasR pathway (key differentiator): As the receptor for angiotensin-(1–7) [Ang-(1–7)], MasR mediates the protective ACE2/Ang-(1–7)/MasR axis, counteracting the overactivated ACE/Ang II/AT1R axis. It directly lowers intraglomerular pressure, exerts anti-inflammatory and antifibrotic effects, and protects the glomerular filtration barrier.[4]
• GCGR pathway: Modulates renal urate transport and enhances urate excretion while inhibiting hepatic purine metabolism, thereby reducing the urate burden at both the "production" and "excretion" ends.[5,6]
• GLP-1R pathway: Improves insulin sensitivity and reduces body weight, optimizing at its source the systemic metabolic milieu that affects the kidney; it also exerts anti-inflammatory and antifibrotic effects and enhances urate excretion through natriuresis.[7]
By combining these three pathways, XTL6001 is able to comprehensively intercept the pathogenic cascade of CKD/diabetic kidney disease (DKD) with a single molecule—from metabolic derangement and renal parenchymal injury through to deterioration of renal function—forming a multidimensional "metabolic improvement (including urate lowering) + proteinuria reduction + renal function preservation" therapeutic profile. The poster data support intervention across the entire "serum uric acid–proteinuria–renal function preservation" continuum.
Key Poster Data: Dual Validation in Preclinical and First-in-Human Studies
The ASN poster (TH-PO0252) presented the key preclinical and clinical data for XTL6001 in renoprotection:
Preclinical studies: consistent evidence of multidimensional renoprotection
Across three established animal models of kidney disease, XTL6001 demonstrated consistent renoprotective effects: dose-dependent reduction of proteinuria, amelioration of glomerular hyperfiltration, preservation of renal function and significant reduction of the kidney index. As a single-molecule agent, it was the first to sequentially interrupt each link of the self-reinforcing vicious cycle of CKD—from correcting systemic metabolic derangement and attenuating abnormal renal hemodynamics to slowing the decline in renal function.
First-in-human study: clear urate-lowering signal and favorable safety
A randomized, double-blind, placebo-controlled Phase I study in healthy adults (NCT07205432) showed the following:
01
Potent and sustained urate lowering: With once-weekly dosing, serum uric acid decreased by approximately 20% from baseline by Day 22, and remained approximately 11% below baseline 5 weeks after the last dose.
02
Enhanced urate excretion: On Day 22, uric acid clearance increased by 12% from baseline in the XTL6001 group, compared with a 28% decrease in the placebo group—a placebo-adjusted difference of +40 percentage points.
03
Predictable pharmacokinetics: Tmax was 12–36 h and t½ was approximately 24–29 h; the half-life was consistent after single and multiple doses, with no accumulation. The urate-lowering effect was more pronounced in participants with higher body mass index (BMI).
04
Favorable safety profile: No serious adverse events (SAEs) were reported. Most adverse events (AEs) were Grade 1–2; gastrointestinal AEs were dose-dependent and manageable, and local tolerability was good. No treatment-emergent anti-drug antibodies (ADAs) were detected, indicating a low risk of immunogenicity and providing a solid foundation for long-term dosing.
Taken together, the preclinical and first-in-human data indicate that XTL6001, a first-in-class MasR/GCGR/GLP-1R triple agonist, provides direct renoprotective effects in addition to metabolic regulation, and has the potential, as a single agent, to fill the therapeutic gap for patients with hyperuricemia and CKD who require both urate control and renoprotection. Micot will continue to advance the clinical development of XTL6001, with the aim of bringing this innovative drug originating in China to patients with CKD and metabolic diseases worldwide as a new treatment option.
Important Notice
XTL6001 is currently in clinical development and has not been approved for marketing. The data cited in this article are derived from early exploratory studies, do not constitute final clinical conclusions, and do not constitute any recommendation for medication use. All treatment decisions should follow the guidance of a specialist physician.
References
[1] GBD 2023 Chronic Kidney Disease Collaborators. Global, regional, and national burden of chronic kidney disease in adults, 1990–2023, and its attributable risk factors: a systematic analysis for the Global Burden of Disease Study 2023. Lancet. 2025;406(10518):2461-2482.
[2] Li L, et al. BMC Nephrol. 2014;15:122.
[3] Astor BC, Matsushita K, Gansevoort RT, et al. Kidney Int. 2011;79(12):1331-1340.
[4] Silveira KD, et al. PLoS One. 2013;8(6):e66082.
[5] Yamamoto T, et al. J Rheumatol. 1997;24(4):708-713.
[6] Ren Y, et al. Mazdutide, a dual GLP-1R/GCGR agonist, inhibits hepatic purine metabolism. Diabetes. 2025;74(Suppl 1):775-P.
[7] Najafi S, et al. Br J Clin Pharmacol. 2022;88(8):3627-3637.
MICOT