Updated Phase 2 OraGrowtH Data Presented at ESPE 2024 Demonstrate Sustained Growth on Oral LUM-201 to 24 Months in PGHD and Correlation of Growth to LUM-201’s Unique Pulsatile Mechanism of Action
“The new analyses and updated data from our Phase 2 OraGrowtH210 and OraGrowtH212 Trials presented at ESPE this week demonstrate sustained growth on LUM-201 in moderate Pediatric Growth Hormone Deficiency (PGHD) to 24 months, as well as the correlation of LUM-201’s pulsatile mechanism of action (MOA) to growth,” said
In the oral presentation of Abstract FC7.6 on
- Results showed that at six months on LUM-201, a significant increase over baseline in Annualized Height Velocity (AHV) was observed for the combined 1.6 and 3.2 mg/kg/day doses. At baseline, AHV was 4.6 cm/yr for 37 subjects for which baseline data were available vs 7.8 cm/yr at 6 months on LUM-201 for 66 subjects.
- Results also showed that growth rates on oral LUM-201 (combined 1.6 and 3.2 mg/kg dose cohorts) were sustained out to 24 months with AHVs of 7.3 (N=65), 7.5 (N=36), and 7.3 (N=20) cm/yr at 12, 18, and 24 months, respectively [graphic below].
- Combined results also demonstrated significant increases in IGF-1 and IGFBP-3 levels from baseline out to 24 months, with IGF-1 increasing from 13.1 (baseline) to 25.5 (12 months) to 29.2 (24 months) nmol/L and IGFBP-3 increasing from 133.5 (baseline) to 179.6 (12 months) to 186.2 (24 months) nmol/L.
- Conclusions: LUM-201 shows a significant increase in AHV at 6 months, and the effect continues with a minimal decrease in AHV through 24 months. Compared to historical rhGH (KIGS)1, LUM-201 has a smaller drop in AHV from 12 months to 24 months. LUM-201 significantly increases IGF-1 and IGFBP-3 levels at 12 months which continues to 24 months. A favorable investigational safety profile has been observed to date.
In the late-breaking oral presentation of Abstract FC15.2 on
- Data from 22 prepubertal children with moderate PGHD from the OraGrowtH212 Trial were evaluated with subjects grouped into tertiles based on 6-month annualized height velocity (AHV).
- Pulsatile growth hormone (GH) pulse assessments at baseline and at 6 months (M6) were characterized using 1) Approximate Entropy (ApEn, scale 0-1) examining degree of orderliness over the whole profile and 2) Functional Principal Component Analysis (FPCA) identifying where within the 12-hour profile, divided into 4-hour periods, the dominant variation occurred.
- Results of 6-month treatment with LUM-201:
- Pulsatile GH secretion, ApEn, IGF-1 SDS and IGFBP-3 SDS increased from baseline to M6.
- Greater M6 AHV was associated with an earlier periodicity of augmented pulsatile GH secretion [graphic below].
- Conclusion: Both amount and pattern of GH secretion are important for growth and IGF-1 responses to LUM-201.
1 Ranke et al., 2010 – Pfizer KIGS database rhGH treated cohort of moderate prepubertal GHD children.
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