CRH

100 Patients Enrolled, Exceeding Target Enrollment of 90 Patients Topline Results for CAHmelia-204 Anticipated in the Third Quarter of 2024 SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)-- Spruce Biosciences, Inc. (Nasdaq: SPRB), a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for rare endocrine disorders with significant unmet medical need, today announced completion of enrollment in its CAHmelia-204 clinical trial of tildacerfont for the treatment of adult classic congenital adrenal hyperplasia (CAH). “Completing enrollment in our CAHmelia-204 clinical trial marks a significant milestone in our adult classic CAH program. This achievement reinforces the continued momentum within our tildacerfont program and positions us favorably to report topline results in the third quarter of 2024,” said Javier Szwarcberg, M.D., M.P.H., Chief Executive Officer of Spruce Biosciences. “Thanks to positive engagement from our patient community and study investigators alike, the CAHmelia-204 clinical trial enrolled 100 patients, exceeding target enrollment of 90 patients.” Dr. Szwarcberg continued, “Looking ahead, assuming positive results from CAHmelia-203 in March and CAHmelia-204 in the third quarter, we plan to meet with the U.S. Food and Drug Administration (FDA) and comparable foreign regulatory authorities to discuss the potential registrational path forward for tildacerfont as a treatment for adult classic CAH.” CAHmelia-204 is a randomized, double-blind, placebo-controlled clinical trial to evaluate the safety and efficacy of tildacerfont, a potentially novel, once-daily, non-steroidal treatment option, in reducing glucocorticoid usage in 100 adults with classic CAH on supraphysiologic doses of glucocorticoids with normal or near normal levels of androstenedione (A4) at baseline. The primary endpoint of this clinical trial is the absolute change in daily glucocorticoid dose in hydrocortisone equivalents (HCe) from baseline at week 24. About CAHmelia-203 CAHmelia-203 is a randomized, double-blind, placebo-controlled, dose ranging Phase 2b clinical trial evaluating the safety and efficacy of tildacerfont in adults with classic CAH and highly elevated levels of A4 at baseline while on stable glucocorticoid dosing. This clinical trial enrolled 96 subjects with elevated levels of A4. For the first six weeks, patients will receive blinded placebo to assess their adherence to their existing glucocorticoid therapy. Patients who continue to meet all eligibility criteria at the end of this period will enter a three-part treatment period. During the placebo-controlled treatment period, patients will be randomized in a blinded manner to receive placebo, 50mg, 100mg, or 200mg tildacerfont once daily. Dosing in the placebo-controlled treatment period will continue for 12 weeks. The primary endpoint of the clinical trial is the percentage change in A4 from baseline to week 12. Following the placebo-controlled treatment period, all patients will receive tildacerfont following a dose-escalation protocol that allows dose increase to 200mg once daily over 12 weeks. Following the 12-week dose-escalation period, all patients will continue receiving tildacerfont at 200mg once daily for an additional 46 weeks. Patients who achieve control of A4 while on supraphysiologic glucocorticoid treatment will have the opportunity to reduce their glucocorticoid dosing in the open-label period according to a pre-specified algorithm in the protocol. For more information about the CAHmelia program, please visit . About CAHmelia-204 CAHmelia-204 is a randomized, double-blind, placebo-controlled Phase 2b clinical trial to evaluate the safety and efficacy of tildacerfont in reducing glucocorticoid usage in 100 adults with classic CAH on supraphysiologic doses of glucocorticoids with normal or near normal levels of A4 at baseline. This clinical trial is designed in two parts. In the first part of the clinical trial, patients will be randomized to receive 200mg tildacerfont once daily or placebo for 24 weeks. During the second part of the clinical trial, all patients will receive open-label 200mg tildacerfont once daily for 52 weeks. Throughout the trial, tapering of glucocorticoids will be guided according to a pre-specified algorithm and continue to the lowest level possible (physiologic replacement levels), as long as patients remain well controlled based on standard biomarkers and clinical assessments. The primary endpoint of this clinical trial is the absolute change in daily glucocorticoid dose in HCe from baseline at week 24. For more information about the CAHmelia program, please visit . About Congenital Adrenal Hyperplasia (CAH) CAH is an autosomal recessive disease, driven by a mutation in the gene that encodes an enzyme necessary for the synthesis of key adrenal hormones. In CAH patients, the body is not able to produce cortisol, leading to serious health consequences. The absence of cortisol alters the normal feedback cycle of the hypothalamic-pituitary-adrenal (HPA) axis and leads to excess secretion of adrenocorticotropic hormone (ACTH), hyperplasia of the adrenal gland, and consequently high levels of adrenal androgen production. As a result, CAH patients suffer from premature puberty, impaired fertility, hirsutism, acne, the development of adrenal rest tumors, and an impaired quality of life, and additionally for females, virilized genitalia and menstrual irregularities. Currently, the only way to downregulate the production of excess androgens in CAH patients is to administer supraphysiologic doses of glucocorticoids, which present specific side effects, including increased risks of developing diabetes, cardiovascular disease, stunted growth, osteoporosis, thin skin, gastrointestinal disorders, and decreased lifespan. About Tildacerfont Tildacerfont is a potent and highly selective, non-steroidal, once-daily oral antagonist of the CRF1 receptor, which is the receptor for corticotropin-releasing factor (CRF), a hormone that is secreted by the hypothalamus. The CRF1 receptor is abundantly expressed in the pituitary gland where it is the primary regulator of the HPA axis. By blocking the CRF1 receptor, tildacerfont has the potential to address the uncontrolled cortisol feedback regulatory pathway in CAH, and in turn reduce the production of ACTH in the pituitary, limiting the amount of androgen produced downstream from the adrenal gland. By controlling excess adrenal androgens through an independent mechanism, tildacerfont has the potential to reduce the unwanted clinical symptoms associated with high androgen exposure and could also enable treating physicians to lower the supraphysiologic glucocorticoid doses given to CAH patients to near physiologic levels. Tildacerfont has been evaluated in over 200 subjects across nine completed clinical trials in which it has been generally well tolerated. No drug-related serious adverse events have been reported related to tildacerfont treatment in completed studies. About Spruce Biosciences Spruce Biosciences is a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for rare endocrine disorders with significant unmet medical need. Spruce is initially developing its wholly-owned product candidate, tildacerfont, as the potential first non-steroidal, once-daily therapy for patients suffering from classic congenital adrenal hyperplasia (CAH) and other endocrine disorders. To learn more, visit and follow us on X, LinkedIn, Facebook, and YouTube. Forward-Looking Statements Statements contained in this press release regarding matters that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include statements regarding, among other things, the results, conduct, progress and timing of Spruce’s clinical trials; Spruce’s expectations regarding reporting results of its clinical trials in 2024; and Spruce’s plans to meet with the FDA and comparable foreign regulatory authorities to discuss the potential registrational path forward of tildacerfont for adult classic CAH. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Words such as “anticipate”, “will”, “potential” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon Spruce’s current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, which include, without limitation, risks and uncertainties associated with Spruce’s business in general, the impact of geopolitical and macroeconomic events, and the other risks described in Spruce’s filings with the U.S. Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made and are based on management’s assumptions and estimates as of such date. Spruce undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law.

Baseline Characteristics Reinforce Study Enrichment Strategy in Adult Classic Congenital Adrenal Hyperplasia (CAH) Program SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)-- Spruce Biosciences, Inc. (Nasdaq: SPRB), a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for rare endocrine disorders with significant unmet medical need, today reported baseline characteristics of patients enrolled in the CAHmelia-203 and CAHmelia-204 clinical studies of tildacerfont for the treatment of adult classic congenital adrenal hyperplasia (CAH). “The baseline characteristics of patients enrolled in our CAHmelia-203 and CAHmelia-204 studies reinforce our adult CAH program enrichment strategy and underscore the clinical significance of both hyperandrogenemia and hypercortisolemia within this patient population,” said Javier Szwarcberg, M.D., M.P.H., Chief Executive Officer of Spruce Biosciences. “In particular, patients in CAHmelia-203, which is assessing the change in androstenedione (A4) from baseline at week 12, enrolled with mean baseline A4 levels nearly six times above the upper limit of normal on a mean baseline daily glucocorticoid (GC) dose of 27 mg hydrocortisone equivalents (HCe).” Dr. Szwarcberg continued: “By contrast, patients in CAHmelia-204, which is assessing the absolute change in GC dose from baseline at week 24, enrolled with a mean baseline daily GC dose of 35 mg HCe and suppressed levels of A4. Collectively, we are encouraged by these baseline characteristics and look forward to reporting topline results from CAHmelia-203 in March, followed by CAHmelia-204 in the third quarter.” CAHmelia Adult Classic CAH Program Baseline Characteristics Study Characteristics CAHmelia-203 (N = 96) CAHmelia-204 (N = 98)1 Male/Female (Proportion of Total Subjects) 47% Male 53% Female 47% Male 53% Female Average Age Age Ranges 32 Years Old (18 – 65 Years Old) 33 Years Old (18 – 64 Years Old) Average Baseline Glucocorticoid (GC) Dose2 27 mg/day (14 mg/m2/day) 35 mg/day (19 mg/m2/day) Average Baseline Androstenedione (A4) Level3 1,149 ng/dL 214 ng/dL Body Mass Index (BMI) 50% Obese (BMI ≥ 30 kg/m2) 53% Obese (BMI ≥ 30 kg/m2) 1 Patients enrolled as of December 20, 2023. Final enrollment is anticipated to be completed in January 2024 and projected between 98 and 100 patients. 2 In hydrocortisone equivalents (HCe) 3 Pre-GC dose. About Congenital Adrenal Hyperplasia (CAH) CAH is an autosomal recessive disease, driven by a mutation in the gene that encodes an enzyme necessary for the synthesis of key adrenal hormones. In CAH patients, the body is not able to produce cortisol, leading to serious health consequences. The absence of cortisol alters the normal feedback cycle of the hypothalamic-pituitary-adrenal (HPA) axis and leads to excess secretion of adrenocorticotropic hormone (ACTH), hyperplasia of the adrenal gland, and consequently high levels of adrenal androgen production. As a result, CAH patients suffer from premature puberty, impaired fertility, hirsutism, acne, the development of adrenal rest tumors, and an impaired quality of life, and additionally for females, virilized genitalia and menstrual irregularities. Currently, the only way to downregulate the production of excess androgens in CAH patients is to administer supraphysiologic doses of glucocorticoids, which present specific side effects, including increased risks of developing diabetes, cardiovascular disease, stunted growth, osteoporosis, thin skin, gastrointestinal disorders, and decreased lifespan. About Tildacerfont Tildacerfont is a potent and highly selective, non-steroidal, once-daily oral antagonist of the CRF1 receptor, which is the receptor for corticotropin-releasing factor (CRF), a hormone that is secreted by the hypothalamus. The CRF1 receptor is abundantly expressed in the pituitary gland where it is the primary regulator of the HPA axis. By blocking the CRF1 receptor, tildacerfont has the potential to address the uncontrolled cortisol feedback regulatory pathway in CAH, and in turn reduce the production of ACTH in the pituitary, limiting the amount of androgen produced downstream from the adrenal gland. By controlling excess adrenal androgens through an independent mechanism, tildacerfont has the potential to reduce the unwanted clinical symptoms associated with high androgen exposure and could also enable treating physicians to lower the supraphysiologic glucocorticoid doses given to CAH patients to near physiologic levels. Tildacerfont has been evaluated in over 200 subjects across nine completed clinical trials in which it has been generally well tolerated. No drug-related serious adverse events have been reported related to tildacerfont treatment in completed studies. About CAHmelia-203 CAHmelia-203 is a randomized, double-blind, placebo-controlled, dose ranging Phase 2b clinical trial evaluating the safety and efficacy of tildacerfont in adults with classic CAH and highly elevated levels of A4 at baseline while on stable glucocorticoid dosing. This clinical trial enrolled 96 subjects with elevated levels of A4. For the first six weeks, patients will receive blinded placebo to assess their adherence to their existing glucocorticoid therapy. Patients who continue to meet all eligibility criteria at the end of this period will enter a three-part treatment period. During the placebo-controlled treatment period, patients will be randomized in a blinded manner to receive placebo, 50mg, 100mg, or 200mg tildacerfont once daily. Dosing in the placebo-controlled treatment period will continue for 12 weeks. The primary endpoint of the clinical trial is the percentage change in A4 from baseline to week 12 with secondary endpoints including the proportion of patients with levels of 17-OHP and A4 within the target and normal range, respectively, and change in lesion volume of TARTs in men. Following the placebo-controlled treatment period, all patients will receive tildacerfont following a dose-escalation protocol that allows dose increase to 200mg once daily over 12 weeks. Following the 12-week dose-escalation period, all patients will continue receiving tildacerfont at 200mg once daily for an additional 46 weeks. Patients who achieve control of A4 while on supraphysiologic glucocorticoid treatment will have the opportunity to reduce their glucocorticoid dosing in the open-label period according to a pre-specified algorithm in the protocol. Additional endpoints include clinical outcomes and patient and clinician reported outcomes. For more information about the CAHmelia program, please visit . About CAHmelia-204 CAHmelia-204 is a randomized, double-blind, placebo-controlled clinical trial to evaluate the safety and efficacy of tildacerfont in reducing supraphysiologic glucocorticoid usage in approximately 90 adults with classic CAH in patients on supraphysiologic doses of glucocorticoids with normal or near normal levels of A4 at baseline. This clinical trial is designed in two parts. In the first part of the clinical trial, patients will be randomized to receive 200mg tildacerfont once daily or placebo for 24 weeks. During the second part of the clinical trial, all patients will receive open-label 200mg tildacerfont once daily for 52 weeks. Throughout the trial, tapering of glucocorticoids will be guided according to a pre-specified algorithm and continue to the lowest level possible (physiologic replacement levels), as long as patients remain well controlled based on standard biomarkers and clinical assessments. The primary endpoint of this clinical trial is the absolute change in daily glucocorticoid dose in hydrocortisone equivalents (HCe) from baseline at week 24. The percent change in glucocorticoid dose from baseline to week 24 will be assessed as a secondary endpoint. Median total cumulative GC dose (HCe) at week 24, change from baseline in insulin resistance at week 24, and percent change from baseline in weight at week 24 and after 52 weeks of tildacerfont treatment will also be assessed as secondary endpoints. Effects on insulin resistance, weight, waist circumference, bone mineral density after 52 weeks of tildacerfont treatment will be assessed as exploratory endpoints. For more information about the CAHmelia program, please visit . About Spruce Biosciences Spruce Biosciences is a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for rare endocrine disorders with significant unmet medical need. Spruce is initially developing its wholly-owned product candidate, tildacerfont, as the potential first non-steroidal, once-daily therapy for patients suffering from classic congenital adrenal hyperplasia (CAH) and other endocrine disorders. To learn more, visit and follow us on X, LinkedIn, Facebook, and YouTube. Forward-Looking Statements Statements contained in this press release regarding matters that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include statements regarding, among other things, the results, conduct, progress and timing of Spruce’s clinical trials. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Words such as “anticipate”, “will”, “potential” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon Spruce’s current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, which include, without limitation, risks and uncertainties associated with Spruce’s business in general, the impact of geopolitical and macroeconomic events, and the other risks described in Spruce’s filings with the U.S. Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made and are based on management’s assumptions and estimates as of such date. Spruce undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law.

Company Today Also Provided Updates on R&D Portfolio and Strategy at Investor Event Crinecerfont New Drug Application Submission Planned in 2024 NBI-'770, an Oral NMDA NR2B Negative Allosteric Modulator, Entering Phase 2 for the Treatment of Major Depressive Disorder Advancing Largest Portfolio of Muscarinic Compounds in Clinical Development Top-Line Phase 2 Data Readouts for Five Programs Anticipated in 2024 Including NBI-'568, an M4 Agonist, for the Treatment of Schizophrenia SAN DIEGO, Dec. 5, 2023 /PRNewswire/ -- Neurocrine Biosciences, Inc. (Nasdaq: NBIX) today announced it received Breakthrough Therapy designation from the U.S. Food and Drug Administration (FDA) for crinecerfont in congenital adrenal hyperplasia. The Company also provided updates on its R&D portfolio and strategy at its Analyst Day, held in New York. "We are very pleased that the FDA granted Breakthrough Therapy designation for crinecerfont, thus recognizing both the seriousness of congenital adrenal hyperplasia and the significant unmet need currently faced by patients and families living with this condition," said Eiry W. Roberts, Chief Medical Officer, Neurocrine Biosciences. "The outstanding safety and efficacy results from the Phase 3 CAHtalyst™ studies in pediatric and adult patients suggest that crinecerfont has the potential to represent a substantial improvement over current standard of care in CAH by controlling androgen levels and allowing for reduced steroid doses. We remain on track to submit the new drug application in 2024." 2023 Analyst Day R&D Portfolio and Strategy Updates At today's Analyst Day, Neurocrine Biosciences provided an update on its R&D portfolio and strategy, including the Company's focus on building breadth and depth across therapeutic areas and modalities with key focus areas in VMAT2 inhibition, CRF antagonism, muscarinic agonism to antagonism, and gene therapy. With a diversified early-stage portfolio spanning a range of modalities including small molecules and biologics, and a growing pre-clinical and development candidate portfolio, Neurocrine is uniquely positioned to advance a steady flow of innovative clinical candidates to patients across its neuroscience-focused therapeutic areas of interest. The Company remains on-track to advance two gene therapies into the clinic in 2025, and anticipates at least 20 development candidates by 2027. Other key portfolio and pipeline updates include: Valbenazine Ongoing Phase 3 study of valbenazine in adjunctive treatment of schizophrenia (ATS) will inform potential advancement of NBI-'890, a next-generation, long-acting VMAT2 inhibitor, which we anticipate will enter the clinic in 2024 No additional Phase 3 studies of valbenazine in ATS planned NBI-'770 (Oral, NMDA NR2B Negative Allosteric Modulator) Represents a potential first-in-class opportunity on a clinically validated target Program entering Phase 2 for treatment of major depressive disorder Muscarinic Compounds Validated and differentiated mechanisms of action Five programs represent largest number of muscarinic assets in human studies, including lead molecule, NBI-'568, in Phase 2 study for the treatment of schizophrenia 2024 portfolio will include four Phase 1 programs: NBI-'570 (dual M1/M4 agonist) NBI-'567 (M1-preferring agonist) NBI-'569 (M4-preferring agonist) NBI-'986 (M4 antagonist, internally discovered at Neurocrine Biosciences) Phase 2 Top-Line Clinical Data Expected in 2024 NBI-'568 (M4 agonist) for the treatment of schizophrenia Luvadaxistat (DAAO inhibitor) for cognitive impairment associated with schizophrenia NBI-'845 (AMPA potentiator) for inadequate response to treatment in major depressive disorder Efmody (long-acting glucocorticoid) for adrenal insufficiency Efmody for congenital adrenal hyperplasia About Breakthrough Therapy Designation Breakthrough Therapy designation is a process developed by the FDA to expedite development and review of drugs that are intended to treat a serious condition and where clinical evidence indicates that the potential drug may demonstrate substantial improvement over available therapy on a clinically significant endpoint(s). To learn more about Breakthrough Therapy designation, click here. About Classic Congenital Adrenal Hyperplasia Congenital adrenal hyperplasia (CAH) refers to a group of genetic conditions that result in an enzyme deficiency that alters the production of adrenal hormones which are essential for life. Approximately 95% of CAH cases are caused by a mutation that leads to deficiency of the enzyme 21-hydroxylase (21-OHD). In classic CAH, severe deficiency of this enzyme leads to an inability of the adrenal glands to produce cortisol and, in approximately 75% of cases, aldosterone. If left untreated, classic CAH can result in salt wasting, dehydration, and even death. There are currently no non-glucocorticoid treatments approved by the U.S. Food and Drug Administration (FDA) for classic CAH. Glucocorticoids (GCs), the current standard of care, are used not only to correct the endogenous cortisol deficiency but typically used at greater than physiologic (supraphysiologic) doses to try to suppress the high levels of corticotropin-releasing factor (CRF) and adrenocorticotropic hormone (ACTH) that result in androgen excess. However, glucocorticoid treatment at supraphysiologic doses has been associated with serious and significant complications of steroid excess, including metabolic issues such as weight gain and diabetes, cardiovascular disease, and osteoporosis. Additionally, long-term treatment with supraphysiologic GC doses may have psychological and cognitive impact such as changes in mood and memory. Androgen excess has been associated with abnormal bone growth and development in pediatric patients, female health problems such as acne, excess hair growth and menstrual irregularities, testicular rest tumors in males, and fertility issues in both sexes. To learn more about CAH, click here. About Corticotropin Releasing Factor (CRF) Corticotropin releasing factor (CRF) regulates the secretion of adrenocorticotropic hormone (ACTH) by the pituitary gland. The neuropeptide was discovered, isolated and identified by the late Wylie W. Vale, PhD., a founder of Neurocrine Biosciences who led the Clayton Foundation Laboratories for Peptide Biology and was the Helen McLoraine Chair in Molecular Neurobiology at the Salk Institute. Dr. Vale mapped the key role CRF played in the regulation of the stress response. In the 95% of classic CAH cases caused by a mutation in the 21-hydroxylase enzyme, the severe enzyme deficiency results in little or no production of the stress hormone cortisol, which can lead to adrenal crisis. The lack of cortisol production also causes a break in the feedback loop that would normally regulate the body's secretion of CRF, and as a result ACTH, which maintains adrenal androgen production within normal ranges. About Crinecerfont Crinecerfont is an investigational, oral, selective corticotropin-releasing factor type 1 receptor (CRF1) antagonist being developed to reduce and control excess adrenal androgens through a steroid-independent mechanism for the treatment of congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (21-OHD). The compound was identified by Dimitri Grigoriadis, Ph.D., Chief Research Officer at Neurocrine Biosciences who conducted post-graduate research with Dr. Wylie Vale at the Salk Institute. Antagonism of CRF1 receptors in the pituitary has been shown to decrease adrenocorticotropic hormone (ACTH) levels, which in turn decreases the production of adrenal androgens and potentially the symptoms associated with classic CAH. Our data demonstrates that lowering androgen levels enables lower, more physiologic dosing of glucocorticoids and thus could potentially reduce the complications associated with exposure to greater than normal glucocorticoid doses in patients with classic CAH. Prior to receiving Breakthrough Therapy designation from the FDA, crinecerfont also received Fast Track and Rare Pediatric Disease designations in congenital adrenal hyperplasia. To learn more about crinecerfont, click here. About the CAHtalyst Phase 3 Studies The CAHtalyst Phase 3 Pediatric and Adult global registrational studies were designed to evaluate the safety, efficacy, and tolerability of crinecerfont in children and adolescents (2–17 years of age) and adults (18 years of age and older) with classic congenital adrenal hyperplasia (CAH) due to 21-OHD, respectively. The CAHtalyst Phase 3 Pediatric and Adult clinical studies met their primary and secondary endpoints. The CAHtalyst Pediatric study demonstrated a statistically significant decrease in serum androstenedione from baseline with crinecerfont at Week 4 over baseline, while both studies showed crinecerfont treatment led to statistically significant reductions in daily glucocorticoid from baseline while maintaining androgen control at Week 28 and Week 24, respectively. Crinecerfont was generally well tolerated in the CAHtalyst Phase 3 studies. The most common adverse events in the CAHtalyst Pediatric study were headache, fever, vomiting, upper respiratory tract infection, and nasopharyngitis, while the most common adverse events in the CAHtalyst Adult study were fatigue, headache, and coronavirus infection. Few serious adverse events were seen in either study, with none assessed as related to crinecerfont. Both studies achieved a >95% completion rate. Details about the Phase 3 data from the CAHtalyst Pediatric Study were reported in October 2023 and can be found here. For more information about the CAHtalyst Pediatric Phase 3 study, please visit ClinicalTrialsPediatric.gov. Details about the Phase 3 data from the CAHtalyst Adult Study were reported in September 2023 and can be found here. For more information about the CAHtalyst Phase 3 study in adults, please visit ClinicalTrialsAdult.gov. About Neurocrine Biosciences, Inc. Neurocrine Biosciences is a leading neuroscience-focused, biopharmaceutical company with a simple purpose: to relieve suffering for people with great needs, but few options. We are dedicated to discovering and developing life-changing treatments for patients with under-addressed neurological, neuroendocrine and neuropsychiatric disorders. The company's diverse portfolio includes FDA-approved treatments for tardive dyskinesia, chorea associated with Huntington's disease, Parkinson's disease, endometriosis* and uterine fibroids*, as well as a robust pipeline including multiple compounds in mid- to late-phase clinical development across our core therapeutic areas. For three decades, we have applied our unique insight into neuroscience and the interconnections between brain and body systems to treat complex conditions. We relentlessly pursue medicines to ease the burden of debilitating diseases and disorders, because you deserve brave science. For more information, visit neurocrine.com, and follow the company on LinkedIn, Twitter, and Facebook. (*in collaboration with AbbVie) NEUROCRINE BIOSCIENCES and NEUROCRINE are registered trademark of Neurocrine Biosciences, Inc. CAHtalyst and the Neurocrine logo are trademarks of Neurocrine Biosciences, Inc. Forward-Looking Statement In addition to historical facts, this press release contains forward-looking statements that involve a number of risks and uncertainties. These statements include, but are not limited to, statements regarding the potential benefits to be derived from certain of our product candidates and our future development plans. Among the factors that could cause actual results to differ materially from those indicated in the forward-looking statements include: our future financial and operating performance; the risk that our products and/or product candidates will not be found to be safe and/or effective or may not prove to be beneficial to patients; that development activities for our products and/or product candidates may not be completed on time or at all; risks that clinical development activities may be delayed for regulatory or other reasons, may not be successful or replicate previous and/or interim clinical trial results, or may not be predictive of real-world results or of results in subsequent clinical trials; risks that regulatory submissions for our products and/or product candidates may not occur or be submitted in a timely manner; risks that our products and/or product candidates may not obtain regulatory approvals; or that the U.S. Food and Drug Administration or regulatory authorities outside the U.S. may make adverse decisions regarding our products and/or product candidates; risks and uncertainties relating to competitive products and technological changes that may limit demand for our products; risks associated with our dependence on third parties for development and manufacturing activities related to our products and our product candidates, and our ability to manage these third parties; and other risks described in the Company's periodic reports filed with the Securities and Exchange Commission, including without limitation the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2023. Neurocrine Biosciences disclaims any obligation to update the statements contained in this press release after the date hereof. SOURCE Neurocrine Biosciences, Inc.