Beyond ADC and PD-1 Competition: How Bao Pharma-B Charts a "Second Growth Curve" in Biopharma

Stock News12-05

As China's biopharmaceutical industry navigates an era of both opportunities and challenges, technological innovation and capital influx drive rapid development while intense homogeneous competition makes "involution" an unavoidable reality. While hundreds of companies battle in crowded fields like ADC (antibody-drug conjugates) and PD-1—from clinical enrollment speed to future pricing wars—Shanghai Bao Pharma-B (referred to as "Bao Pharma-B") has chosen a distinctly differentiated strategic path.

Focusing on addressing genuine unmet clinical and market needs, Bao Pharma-B's three core products—KJ103, KJ017, and SJ02—currently in late-stage clinical trials, NDA registration, or commercialization phases, steer clear of the ADC and PD-1 red oceans. Instead, they target critical areas: emergency treatment for life-threatening autoimmune diseases, a revolutionary subcutaneous delivery platform for biologics, and patient experience upgrades in assisted reproductive technology. Despite their apparent differences, these products share a unified value-creation logic centered on short clinical cycles, high market certainty, and solving existing pain points. How will they reshape the future market landscape?

**KJ103: A Best-in-Class Emergency Solution for Severe Autoimmune Diseases** In autoimmune disease treatment, particularly for antibody-mediated critical conditions and organ transplants, significant unmet needs persist. Current therapies like plasma exchange (PE) or high-dose IVIg face limitations such as slow onset, operational complexity, and safety risks. KJ103, a "Best-in-Class" IgG-degrading enzyme, stands out as the first and only globally to reach registration-stage clinical trials for desensitization in kidney transplants and IgG-mediated diseases like anti-GBM disease and Guillain-Barré syndrome (GBS).

Phase I trials show KJ103 reduces IgG levels by over 90% within one hour and 95% within six hours, maintaining a 70% reduction for a week. This rapid, sustained action provides a critical "time window" for treating severe conditions. Its low pre-existing antibody levels also enhance safety and allow repeat dosing. KJ103 has received China's "Breakthrough Therapy Designation" (BTD) for kidney transplant desensitization and anti-GBM disease, accelerating regulatory review.

Market potential spans three areas: 1. **Organ Transplants**: As China's first potential IgG-degrading enzyme for highly sensitized patients, it could fill a domestic gap and improve transplant success rates. 2. **Severe Autoimmune Diseases**: Its rapid efficacy may revolutionize treatment for conditions like anti-GBM disease and GBS. 3. **Broad-Spectrum Potential**: Its mechanism could theoretically address hundreds of IgG-mediated diseases.

Frost & Sullivan projects China's IgG-degrading enzyme market to hit RMB 6.386 billion by 2033, with KJ103 poised to lead.

**KJ017: China's "Plug-and-Play" Subcutaneous Delivery Platform** The global shift from intravenous (IV) to subcutaneous (SC) biologics is irreversible, driven by patient convenience and healthcare efficiency. KJ017, a recombinant human hyaluronidase, enables high-dose SC delivery by temporarily breaking down subcutaneous hyaluronic acid, overcoming traditional SC volume limits (1-2 mL). Partnering with KJ017 cuts IV infusion times from 30 minutes to 7 hours down to 2–5 minutes for SC administration.

As China's first and only recombinant hyaluronidase in NDA stage—and the world's third—KJ017 breaks Halozyme's monopoly. Its open collaboration model (vs. Halozyme's exclusive licensing) offers local biopharma firms a rare option for lifecycle extension and differentiation. Revenue is tied to downstream biologics sales, ensuring stability.

Applications include: - **Standalone Use**: For large-volume SC infusions (RMB 1.507 billion market by 2033). - **Combination Therapies**: Converting IV biologics (e.g., monoclonal antibodies) to SC formats. - **Antibiotics**: Aligning with China's "IV restriction" policies for primary care markets.

With FDA DMF filing completed, KJ017's global potential mirrors Halozyme (USD 8B market cap) and Alteogen (USD 17B peak).

**SJ02: Redefining Assisted Reproduction with Long-Acting FSH** Amid declining fertility rates, China's assisted reproductive market is growing, with innovation shifting toward patient experience. SJ02, a long-acting recombinant FSH fusion protein, reduces injection frequency from daily to weekly via CTP peptide technology, easing patient burden.

As China's first and only long-acting FSH (global competition is sparse), SJ02 targets a RMB 10.2 billion FSH market by 2033, with long-acting variants projected at RMB 3.6 billion. Despite a halted partnership with Organon, Bao Pharma-B secured a distribution deal with Anke Bio for Greater China commercialization in July 2025.

**Strategic Synergy** Bao Pharma-B's trio—KJ103 (emergency care), KJ017 (platform enabler), and SJ02 (experience upgrade)—share a common thread: enhancing clinically validated therapies rather than chasing novel targets. This "upgrade-first" approach shortens commercialization timelines and mitigates risk. All three leverage complex biologics expertise (enzyme engineering for KJ103/KJ017; fusion proteins for SJ02) and target "first-in-China" or global leadership positions. Together, they form a diversified, defensible revenue model, positioning Bao Pharma-B as a biopharma innovator with both local and global potential.

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