IP Library Granted Patent US 12,329,757
Granted Patent B2
US 12,329,757 · App. 18/129,177 · Granted Jun 17, 2025

Methods for increasing sepiapterin plasma exposure

Inventors: Neil Smith (Cary, NC); Jonathan Reis (Brookline, MA)
Assignee: PTC Therapeutics MP, Inc.
A61K31/519A61K9/0053
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,329,757
App. No.
18/129,177
Granted
Jun 17, 2025
Kind
B2
Abstract

The present invention features compositions including sepiapterin, or a pharmaceutically acceptable salt thereof, and methods for the treatment of BH4-related disorders. In some embodiments, these compositions and methods result in an increase in plasma, CSF, and/or brain exposure of sepiapterin.

Claims (6)

1. A method of treating a BH4-related disorder in a subject in need thereof, the method comprising administering to the subject an effective amount of sepiapterin, or a pharmaceutically acceptable salt thereof, without food, wherein the BH4-related disorder is phenylketonuria.

2. The method of claim 1 , wherein the effective amount is an amount sufficient to produce a concentration of at least 0.5 ng/mL in the plasma of the subject within 1 hour of administration.

3. The method of claim 2 , wherein the effective amount comprises a dose that is at least 20% lower than the dose sufficient to produce a maximum plasma concentration (Cmax) of at least 0.5 ng/mL in the subject within 1 hour of administration of sepiapterin, or a pharmaceutically acceptable salt thereof, with food.

4. The method of claim 1 , wherein the effective amount is 2.5 mg/kg to 100 mg/kg per dose.

5. The method of claim 1 , wherein the administration to the subject occurs more than 30 minutes before or more than four hours after consuming food.

6. The method of claim 1 , wherein the effective amount results in an increase in the maximum plasma, CSF, and/or brain concentration (Cmax) of sepiapterin, or a pharmaceutically acceptable salt thereof, compared to administration with food.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 15, 2024
From: SMITH, NEIL; REIS, JONATHAN
To: CENSA PHARMACEUTICALS INC.
Reel/Frame 067422/0252 →
CHANGE OF NAME Recorded May 15, 2024
From: CENSA PHARMACEUTICALS INC.
To: PTC THERAPEUTICS MP, INC.
Reel/Frame 067427/0748 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2023
From: SMITH, NEIL; REIS, JONATHAN
To: CENSA PHARMACEUTICALS INC.
Reel/Frame 064963/0448 →
Priority Claims (1)
GC 2019/37663 · May 28, 2019 · regional
Continuity (5)
Continuation 17059719
Provisional Application 62822376 · Mar 22, 2019
Provisional Application 62771398 · Nov 26, 2018
Provisional Application 62677943 · May 30, 2018
Related Publication 20230381181A1 · Nov 30, 2023
References Cited (104)
US 4758571A · Curtius et al. · 1988 [cited by applicant]
US 4774244A · Curtius et al. · 1988 [cited by applicant]
US 5736343A · Landry · 1998 [cited by applicant]
US 7566462B2 · Jungles et al. · 2009 [cited by applicant]
US 7566714B2 · Oppenheimer et al. · 2009 [cited by applicant]
US 7582799B2 · Yoshino et al. · 2009 [cited by applicant]
US 7612073B2 · Oppenheimer et al. · 2009 [cited by applicant]
US 7727987B2 · Moser et al. · 2010 [cited by applicant]
US 7732599B2 · Moser et al. · 2010 [cited by applicant]
US 7947681B2 · Oppenheimer et al. · 2011 [cited by applicant]
US 8003126B2 · Jungles et al. · 2011 [cited by applicant]
US 8067416B2 · Oppenheimer et al. · 2011 [cited by applicant]
US 8188043B2 · Cooke et al. · 2012 [cited by applicant]
US RE43797E · Oppenheimer et al. · 2012 [cited by applicant]
US 8318745B2 · Moser et al. · 2012 [cited by applicant]
US 9181254B2 · Yoshino et al. · 2015 [cited by applicant]
US 9433624B2 · Oppenheimer et al. · 2016 [cited by applicant]
US 9492451B2 · Rustomjee et al. · 2016 [cited by applicant]
US 9993481B2 · Oppenheimer et al. · 2018 [cited by applicant]
US 11072614B2 · Levy · 2021 [cited by applicant]
US 11130760B2 · Yoshino et al. · 2021 [cited by applicant]
US 11173158B2 · Hasegawa et al. · 2021 [cited by applicant]
US 11617752B2 · Smith et al. · 2023 [cited by applicant]
US 11752154B2 · Levy · 2023 [cited by applicant]
US 11773097B2 · Levy · 2023 [cited by applicant]
US 20050197341A1 · Woolf et al. · 2005 [cited by applicant]
US 20060040946A1 · Oppenheimer et al. · 2006 [cited by applicant]
US 20070270581A1 · Jungles et al. · 2007 [cited by applicant]
US 20080075666A1 · Dudley et al. · 2008 [cited by applicant]
US 20100130500A1 · Kakkis · 2010 [cited by applicant]
US 20110144117A1 · Widmann et al. · 2011 [cited by applicant]
US 20130108694A1 · Chou et al. · 2013 [cited by applicant]
US 20130197000A1 · Hasegawa et al. · 2013 [cited by applicant]
US 20130237543A1 · Oppenheimer et al. · 2013 [cited by applicant]
US 20130336975A1 · Dutzar et al. · 2013 [cited by applicant]
US 20170000793A1 · Oppenheimer et al. · 2017 [cited by applicant]
US 20170307591A1 · Woolf et al. · 2017 [cited by applicant]
US 20190308975A1 · Levy · 2019 [cited by applicant]
US 20200009145A1 · Hasegawa et al. · 2020 [cited by applicant]
US 20200010469A1 · Yoshino et al. · 2020 [cited by applicant]
US 20200061070A1 · Levy · 2020 [cited by applicant]
US 20210161901A1 · Smith et al. · 2021 [cited by applicant]
US 20210269443A1 · Levy et al. · 2021 [cited by applicant]
US 20220362249A1 · Smith · 2022 [cited by applicant]
US 20240043426A1 · Levy · 2024 [cited by applicant]
US 20240100054A1 · Levy · 2024 [cited by applicant]
JP 2010523708A · 2010 [cited by applicant]
WO WO2005028462A1 · 2005 [cited by applicant]
WO WO2008128049A2 · 2008 [cited by applicant]
WO WO2011132435A1 · 2011 [cited by applicant]
WO WO2018102314A1 · 2018 [cited by applicant]
WO WO2018102315A1 · 2018 [cited by applicant]
WO WO2019046849A1 · 2019 [cited by applicant]
WO WO2019232126A1 · 2019 [cited by applicant]
WO WO2021026247A1 · 2021 [cited by applicant]
WO WO2021062264A1 · 2021 [cited by applicant]
Blau et al., Molecular Genetics and Metabolism 96 (2009) 158-163 (Year: 2009). [cited by examiner]
“Drug pharmacokinetic test of pharmaceutical products, Drug No. 796,” A Chief Administrative Agency for Ministry of Health, Labour, and Welfare. 2001(6) (Jan. 2016) (12 pages). [cited by applicant]
Fanet et al., “Tetrahydrobioterin (BH [cited by applicant]
Machine Translation of Notice of Decision of Refusal for Japanese Patent Application No. 2020-566655 dated Sep. 29, 2023 (4 pages). [cited by applicant]
Murphy, “What is BH [cited by applicant]
U.S. Appl. No. 17/486,421, PTC Therapeutics MP, Inc. [cited by applicant]
U.S. Appl. No. 17/342,910, PTC Therapeutics MP, Inc. [cited by applicant]
U.S. Appl. No. 17/059,887, PTC Therapeutics MP, Inc. [cited by applicant]
U.S. Appl. No. 17/059,632, PTC Therapeutics MP, Inc. [cited by applicant]
Bernegger et al., “High frequency of tetrahydrobiopterin-responsiveness among hyperphenylalaninemias: a study of 1,919 patients observed from 1988 to 2002,” Mol Genet Metab. 77(4):304-13 (2002). [cited by applicant]
Blau et al., “Tetrahydrobiopterin deficiencies without hyperphenylalaninemia: diagnosis and genetics of DOPA-responsive dystonia and sepiapterin reductase deficiency,” Mol Genet Metab. 74(1-2):172-85 (2001). [cited by applicant]
Brittain et al., “Polymorphism in Pharmaceutical Solids,” CRC Press. 192:3-480 (2016). [cited by applicant]
Bruschi, “Drug Delivery Systems-Mechanisms of floating, [cited by applicant]
Caira, “Crystalline polymorphism of organic compounds,” [cited by applicant]
“Cerebrospinal fluid,” <https://en.wikipedia.org/w/index.php?title=Cerebrospinal_fluid&oldid=836321065>, retrieved Aug. 5, 2019 (8 pages). [cited by applicant]
ClinicalTrials.gov Identifier: NCT03519711, “A Study of CNSA-001 in Primary Tetrahydrobiopterin (BH4) Deficient Participants with Hyperphenylalaninemia,” <https://clinicaltrials.gov/ct2/show/study/NCT03519711>, last upd… [cited by applicant]
Curtius et al., “Atypical phenylketonuria due to tetrahydrobiopterin deficiency. Diagnosis and treatment with tetrahydrobiopterin, dihydrobiopterin and sepiapterin.” Clin Chim Acta. 93(2):251-62 (1979). [cited by applicant]
European Medicines Agency, “Guideline on conduct of pharmacokinetic studies in target animal species,” dated Nov. 9, 2017 (13 pages). [cited by applicant]
Extended European Search Report for European Patent Application No. 19811888.7, dated Feb. 18, 2022 (14 pages). [cited by applicant]
Grant et al., “Relationships among rat ultrasonic vocalizations, behavioral measures of striatal dopamine loss, and striatal tyrosine hydroxylase immunoreactivity at acute and chronic time points following unilateral 6-… [cited by applicant]
Hennermann et al., “Partial and total tetrahydrobiopterin-responsiveness in classical and mild phenylketonuria (PKU),” J Inherit Metab Dis. 25(Suppl 1):21:041-P (2002) (Abstract only). [cited by applicant]
Ichiyama et al., “Enzymic studies on the biosynthesis of serotonin in mammalian brain,” J Biol Chem. 245(7):1699-709 (1970). [cited by applicant]
International Search Report and Written Opinion for International Application No. PCT/US2019/034523, dated Aug. 8, 2019 (14 pages). [cited by applicant]
Kaufman, “Phenylalanine hydroxylation cofactor in phenylketonuria,” Science. 128(3337):1506-8 (1958). [cited by applicant]
Klaiman et al., “Tetrahydrobiopterin as a treatment for autism spectrum disorders: a double-blind, placebo-controlled trial,” J Child Adolesc Psychopharmacol. 23(5):320-8 (2013) (11 pages). [cited by applicant]
Kuplennik et al., “Enhanced nanoencapsulation of sepiapterin within PEG-PCL nanoparticles by complexation with triacetyl-beta cyclodextrin,” Molecules. 24(15):2715 (Jul. 2019) (19 pages). [cited by applicant]
Kure et al., “Tetrahydrobiopterin-responsive phenylalanine hydroxylase deficiency,” J Pediatr. 135(3):375-8 (1999). [cited by applicant]
Kwon et al., “Reduced biopterin as a cofactor in the generation of nitrogen oxides by murine macrophages,” J Biol Chem. 264(34):20496-501 (1989). [cited by applicant]
Longo, “Disorders of biopterin metabolism,” J Inherit Metab Dis. 32(3):333-42 (2009) (Feb. 9, 2009). [cited by applicant]
Matalon et al., “Tetrahydrobiopterin (BH4) responsive phenylalanine hydroxylase (PAH) mutations,” J Inherit Metab Dis. 25(Suppl 1):23:045-P (2002) (Abstract only). [cited by applicant]
Mayer et al., “Brain nitric oxide snythase is a biopterin- and flavin-containing multi-functional oxido-reductase,” FEBS Lett. 288(1-2):187-91 (1991). [cited by applicant]
Muntau et al., “Tetrahydrobiopterin as an alternative treatment for mild phenylketonuria,” N Engl J Med. 347(26):2122-32 (2002). [cited by applicant]
Nagatsu et al., “Tyrosine hydroxylase. The initial step in norepinephrine biosynthesis,” J Biol Chem. 239(9):2910-7 (1964). [cited by applicant]
Niederwieser et al., “Atypical phenylketonuria with defective biopterin metabolism. Monotherapy with tetrahydrobiopterin or sepiapterin, screening and study of biosynthesis in man,” Eur J Pediatr. 138(2):110-2 (1982). [cited by applicant]
Park et al., “Optimization of expression conditions enhances production of sepiapterin, a precursor for tetrahydrobiopterin biosynthesis, in recombinant [cited by applicant]
Pfleiderer et al., “Pteridine, LXVIII. Überführung von biopterin in sepiapterin und absolute konfiguration des sepiapterins,” Chem Ber. 112:2750-2755 (1979). [cited by applicant]
Ponzone et al., “Hyperphenylalaninemia and pterin metabolism in serum and erythrocytes,” Clin Chim Acta. 216(1-2):63-71 (1993). [cited by applicant]
Saeed et al., “Uncertainty of thermal characterization of phase change material by differential scanning calorimetry analysis,” Int J Eng Res Technol. 5(1):405-12 (2016). [cited by applicant]
Sawabe et al., “Cellular uptake of sepiapterin and push-pull accumulation of tetrahydrobiopterin,” Mol Genet Metab. 94(4):410-6 (2008). [cited by applicant]
Sawabe et al., Sepiapterin administration raises tissue BH4 levels more efficiently than BH4 supplement in normal mice, [cited by applicant]
Schircks et al., “Über Pterinchemie. 65 Mitteilung [1]. Herstellung von (6 R,S)-5,6,7,8-Tetrahydro-L-biopterin, 7,8-Dihydro-L-biopterin, L-Sepiapterin, Deoxysepiapterin, (6 R,S)-5,6-Dihydrodeoxysepiapterin and 2′-Deoxyb… [cited by applicant]
Shircks Laboratories, “Data Sheet: L-Sepiapterin. Product No. 11.225,” published Jan. 26, 2016 (1 page). [cited by applicant]
Smith et al., “Phase I clinical evaluation of CNSA-001 (sepiapterin), a novel pharmacological treatment for phenylketonuria and tetrahydrobiopterin deficiencies, in healthy volunteers,” Mol Genet Metab. 126(4):406-12 (F… [cited by applicant]
Spaapen et al., “Tetrahydrobiopterin-responsive phenylalanine hydroxylase deficiency, state of the art,” Mol Genet Metab. 78(2):93-9 (2003). [cited by applicant]
Sugiura et al., “The structures of the reoxidation products of 7,8-dihydroneopterin,” Bull Chem Soc Jpn. 46(3):939-42 (1973). [cited by applicant]
Tietz et al., “A new pteridine-requiring enzyme system for the oxidiation of glyceryl ethers,” J Biol Chem. 239(12):4081-90 (1964). [cited by applicant]
Viscontini et al., “Fluorescent substances from [cited by applicant]
Woo et al., “Production of sepiapterin in [cited by applicant]
Cited By (1)
US 12,637,465