CYP21A2

MENLO PARK, Calif., March 17, 2025 (GLOBE NEWSWIRE) -- PacBio (NASDAQ: PACB), a leading provider of high-quality, highly accurate sequencing platforms, today announced a newly published study in Nature Communications unveiling a powerful new method for analyzing some of the most complex regions of the human genome. Led by researchers from PacBio, GeneDx, and a global consortium of genomics experts, the study utilizes Paraphase, an informatics tool that, when paired with HiFi long-read sequencing, allows for high-precision variant detection and copy number analysis in 316 previously inaccessible segmental duplication regions, including 9 challenging medically-relevant genes. Segmental duplications (SDs) are highly similar, duplicated regions of the genome that have posed persistent challenges for genetic analysis. These regions contain hundreds of genes critical to human health—including those implicated in spinal muscular atrophy (SMN1/SMN2), congenital adrenal hyperplasia (CYP21A2), and red-green color blindness (OPN1LW/OPN1MW)—but their high sequence similarity makes accurate mapping and variant detection nearly impossible with short-read sequencing. Paraphase, combined with HiFi sequencing, overcomes these challenges by phasing haplotypes across paralogous gene families, providing a more complete and accurate view of genetic variation. This is enabled by the length and accuracy of reads from HiFi sequencing. Study Reveals Previously Inaccessible Regions of the Genome By applying Paraphase to 160 long (>10 kb) segmental duplication regions spanning 316 genes, the researchers revealed new insights into genetic variation across five ancestral populations. Among the key findings: Newly Identified De Novo Variants in SDs in Parent-Offspring Trios: Analysis of 36 trios uncovered 7 previously undetected de novo single nucleotide variants (SNVs) and 4 de novo gene conversion events, two of which were non-allelic—a level of detail not possible with traditional sequencing approaches.Copy Number Variability Across Populations: The study profiled the copy number distributions of paralog groups across populations, showing high copy number variability in many gene families in SDs. It also provided a new approach for identifying false duplications in the reference genome.Gene Conversion Drives Sequence Similarity between Genes and Paralogs: The team identified 23 paralog groups with strikingly low genetic diversity between genes and paralogs, indicating that frequent gene conversion and/or unequal crossing-over may have played a role in preserving highly similar gene copies over time. “For decades, sequencing technologies have struggled to provide reliable data on paralogous genes—some of the most medically relevant but hardest to analyze regions of the genome,” said Dr. Michael A. Eberle, Vice President of Bioinformatics at PacBio and senior author of the study. “With Paraphase and HiFi sequencing, we now have a scalable way to accurately genotype SD-encoded genes across diverse populations, filling in long-standing gaps in genomic research and improving our ability to identify disease-linked variants.” The study also highlights how Paraphase can disentangle medically important gene families that have long required specialized, multi-step assays like MLPA and Sanger sequencing. For example, in the CYP21A2/CYP21A1P region—where mutations cause congenital adrenal hyperplasia—the researchers characterized a previously overlooked duplication allele carrying both a functional CYP21A2 copy and a CYP21A2(Q319X) pseudogene copy, which could have led to misclassification in standard tests. “This study demonstrates that when we use HiFi sequencing we see a much richer and more complex picture of genetic variation,” said Dr. Xiao Chen, lead author of the study and principal scientist at PacBio. “Paraphase enables the precise resolution of genetic regions that have been largely inaccessible until now, providing new opportunities for disease research, population genetics, and potentially even clinical testing.” “Long-read genome sequencing offers the ability to detect variants that are difficult to identify using other testing methods, particularly in regions with highly similar sequence,” said Dr. Paul Kruszka, MD, FACMG, Chief Medical Officer at GeneDx. “This work may enhance variant detection, resolve complex genomic regions, and provide more answers for patients and families, so we are encouraged by the prospect of the data.” The full study, “Genome-wide profiling of highly similar paralogous genes using HiFi sequencing,” is now available in Nature Communications. About PacBio PacBio (NASDAQ: PACB) is a premier life science technology company that is designing, developing and manufacturing advanced sequencing solutions to help scientists and clinical researchers resolve genetically complex problems. Our products and technologies stem from two highly differentiated core technologies focused on accuracy, quality and completeness which include our HiFi long-read sequencing and our SBB® short-read sequencing technologies. Our products address solutions across a broad set of research applications including human germline sequencing, plant and animal sciences, infectious disease and microbiology, and oncology. For more information, please visit www.pacb.com and follow @PacBio. PacBio products are provided for Research Use Only. Not for use in diagnostic procedures. Forward Looking Statements This press release may contain “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and the U.S. Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact are forward-looking statements, including statements relating to the uses, coverage, advantages, and benefits or expected benefits of using, PacBio products or technologies, including in connection with providing a scalable way to accurately genotype SD-encoded genes across diverse populations, fill in long-standing gaps in genomic research, and improve the ability to identify disease-linked variants; enabling precise resolution of genetic regions that were previously largely inaccessible; providing new opportunities for disease research, population genetics, and potential clinical testing; potentially detecting or enhancing the detection of variants difficult to identify using other methods, resolving complex genomic regions, and providing more answers for patients and families; and other future events. You should not place undue reliance on forward-looking statements because they are subject to assumptions, risks, and uncertainties and could cause actual outcomes and results to differ materially from currently anticipated results, including, the difficulty of generating discoveries in complicated areas of biology; potential performance, quality and regulatory issues; and third-party claims alleging infringement of patents and proprietary rights or seeking to invalidate PacBio's patents or proprietary rights. Additional factors that could materially affect actual results can be found in PacBio's most recent filings with the Securities and Exchange Commission, including PacBio's most recent reports on Forms 8-K, 10-K, and 10-Q, and include those listed under the caption "Risk Factors." These forward-looking statements are based on current expectations and speak only as of the date hereof; except as required by law, PacBio disclaims any obligation to revise or update these forward-looking statements to reflect events or circumstances in the future, even if new information becomes available. Contacts Investors and Media:Todd Friedmanir@pacificbiosciences.com Media:ir@pacificbiosciences.com

SAN DIEGO, Jan. 21, 2025 /PRNewswire/ -- Neurocrine Biosciences, Inc. (Nasdaq: NBIX) today announced publication of a classic congenital adrenal hyperplasia (CAH)-focused supplement in The Journal of Clinical Endocrinology & Metabolism (JCEM), sponsored by the company. The supplement, titled "Challenges and Opportunities in the Management of Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency Throughout the Lifetime," contains eight review articles that provide a comprehensive look at the clinical, psychosocial, treatment-related and day-to-day challenges faced by individuals with classic CAH. JCEM is a leader in disseminating research that supports healthcare providers, patients and caregivers in advancing the understanding and management of various endocrinology conditions, such as CAH. "Our understanding of the genetics, pathophysiology, and complications of CAH has exploded over the last 20 years," said Dr. Richard Auchus, M.D., Ph.D., Principal Investigator, Professor of Pharmacology and Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes at the University of Michigan. "These reviews capture the many dimensions of this complex condition and its management. The limitations of traditional glucocorticoid treatment, particularly in under-resourced areas, create a large disease burden, multiple co-morbidities, and poor outcomes for many patients. The authors are optimistic that this evolving knowledge and emerging treatments, such as corticotropin-releasing factor type 1 receptor antagonists, hold great promise for more personalized care, with improved androgen control and less glucocorticoid-related health consequences in patients." The JCEM supplement is a collection of reviews authored by leading endocrinologists and researchers and sponsored by Neurocrine Biosciences. It explores various aspects of classic CAH management, including pathophysiology, clinical manifestations, treatment challenges, barriers to care, psychosocial impact and advances in treatment, including CRENESSITY™ (crinecerfont), a potent and selective oral corticotropin-releasing factor type 1 receptor (CRF1) antagonist. CRENESSITY is the first and only classic CAH treatment that directly reduces excess adrenocorticotropic hormone and downstream adrenal androgen production, allowing for glucocorticoid dose reduction. The articles aim to provide healthcare professionals with up-to-date insights and evidence-based approaches that can enhance clinical practice and patient care. "We are honored to support this important educational content in collaboration with The Journal of Clinical Endocrinology & Metabolism," said Eiry W. Roberts, M.D., Chief Medical Officer, Neurocrine Biosciences. "Neurocrine is committed to empowering patients, caregivers and healthcare providers with the knowledge and support to navigate the life-long challenges of treating and living with CAH." The eight reviews include: Genetics and Pathophysiology of Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Yang M and White PC) Clinical Manifestations and Treatment Challenges in Infants and Children with Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Nokoff NJ, Buchanan C and Barker JM) Challenges in Adolescent and Adult Males with Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Claahsen-van der Grinten HL, Adriaansen BPH and Falhammar H) Clinical Manifestations and Challenges in Adolescent and Adult Females with Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Engberg H, Nordenstrӧm A and Hirschberg AL) Mental Health Issues Associated with Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency, (Sandberg DE, Gardner M and Lapham ZK) Life With Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency: Challenges and Burdens (Witchel SF, Miller T, McCann E and Gupta A) Barriers to the Management of Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Eitel KB and Fechner PY) Future Directions in the Management of Classic Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Sarafoglou K and Auchus RJ) About Congenital Adrenal Hyperplasia Congenital adrenal hyperplasia (CAH) is a rare genetic condition that results in an enzyme deficiency that alters the production of adrenal steroid hormones, such as cortisol, aldosterone and adrenal androgens, which are essential for life. Approximately 95% of CAH cases are caused by variants of the CYP21A2 gene that leads to deficiency of the enzyme 21-hydroxylase. Severe deficiency of this enzyme leads to an inability of the adrenal glands to produce enough cortisol and, in approximately 75% of cases, aldosterone. Because individuals with CAH are still able to produce androgens, the unused precursors that would normally be used to make cortisol instead result in the production of excess amounts of androgens. If left untreated, CAH can result in salt wasting, dehydration and even death. Historically, exogenous glucocorticoids (GCs) have been used not only to correct the endogenous cortisol deficiency, but doses used are higher than cortisol replacement needed (supraphysiologic) to lower the levels of adrenocorticotropic hormone (ACTH) and adrenal androgens. However, GC treatment at high 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 high-dose GCs may have psychological and cognitive impact, such as changes in mood and memory. Adrenal androgen excess has been associated with abnormal bone growth and development in pediatric patients, female health problems such as excess facial hair growth and menstrual irregularities, testicular rest tumors in males and fertility issues in both sexes. About CRENESSITY™ (crinecerfont) CRENESSITY™ is a potent and selective, oral corticotropin-releasing factor type 1 receptor (CRF1) antagonist developed to reduce and control excess adrenocorticotropic hormone (ACTH) and adrenal androgens through a non-glucocorticoid (GC) mechanism for the treatment of classic congenital adrenal hyperplasia (CAH). Antagonism of CRF1 receptors in the pituitary has been shown to decrease ACTH levels, which in turn decreases the production of adrenal androgens and potentially the symptoms associated with CAH. The robust clinical study data demonstrate that lowering adrenal androgen levels with CRENESSITY enables lower, more physiologic dosing of GCs to replace missing cortisol. CRENESSITY comes in capsules and an oral solution. The capsule formulation is available in 50 mg and 100 mg doses. The oral solution is available as a 50 mg/mL strength formulation. For adults 18 years and older, the recommended dosage is 100 mg twice daily taken orally with a meal. For pediatric patients four to 17 years of age weighing less than 55 kg (121 lbs), the recommended dosage is based on body weight and is administered twice daily, taken orally with a meal. For pediatric patients weighing more than 55 kg (121 lbs), the recommended dosage is 100 mg twice daily taken orally with a meal. Healthcare providers can work with patients to determine the appropriate formulation for use depending on patient needs. Patients receiving CRENESSITY should continue GC therapy for cortisol replacement. Important Information Approved Uses CRENESSITY (crinecerfont) is a prescription medicine used together with glucocorticoids (steroids) to control androgen (testosterone-like hormone) levels in adults and children 4 years of age and older with classic congenital adrenal hyperplasia (CAH). IMPORTANT SAFETY INFORMATION Do not take CRENESSITY if you: Are allergic to crinecerfont, or any of the ingredients in CRENESSITY. CRENESSITY may cause serious side effects, including: Allergic Reactions. Symptoms of an allergic reaction include tightness of the throat, trouble breathing or swallowing, swelling of the lips, tongue, or face, and rash. If you have an allergic reaction to CRENESSITY, get emergency medical help right away and stop taking CRENESSITY. Risk of Sudden Adrenal Insufficiency or Adrenal Crisis With Too Little Glucocorticoid (Steroid) Medicine. Sudden adrenal insufficiency or adrenal crisis can happen in people with congenital adrenal hyperplasia who are not taking enough glucocorticoid (steroid) medicine. You should continue taking your glucocorticoid (steroid) medicine during treatment with CRENESSITY. Certain conditions such as infection, severe injury, or shock may increase your risk for sudden adrenal insufficiency or adrenal crisis. Tell your healthcare provider if you get a severe injury, infection, illness, or have planned surgery during treatment. Your healthcare provider may need to change your dose of glucocorticoid (steroid) medicine. Before taking CRENESSITY, tell your healthcare provider about all of your medical conditions, including if you are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. The most common side effects of CRENESSITY in adults include tiredness, headache, dizziness, joint pain, back pain, decreased appetite, and muscle pain. The most common side effects of CRENESSITY in children include headache, stomach pain, tiredness, nasal congestion, and nose bleeds. These are not all the possible side effects of CRENESSITY. Call your healthcare provider for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit MedWatch at or call 1-800-FDA-1088. Dosage Forms and Strengths: CRENESSITY is available in 50 mg and 100 mg capsules and as an oral solution of 50 mg/mL. Please see full Prescribing Information. 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. 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, classic congenital adrenal hyperplasia, 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, X (formerly Twitter) and Facebook. (*in collaboration with AbbVie) The NEUROCRINE BIOSCIENCES Logo Lockup and YOU DESERVE BRAVE SCIENCE are registered trademarks of Neurocrine Biosciences, Inc. CRENESSITY is a trademark of Neurocrine Biosciences, Inc. Forward-Looking Statements 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 CRENESSITY. Factors that could cause actual results to differ materially from those stated or implied in the forward-looking statements include, but are not limited to, the following: risks and uncertainties associated with Neurocrine Biosciences' business and finances in general, as well as risks and uncertainties associated with the commercialization of CRENESSITY, including the extent to which patients and physicians accept and adopt CRENESSITY; whether CRENESSITY receives adequate reimbursement from third-party payors; risks and uncertainties relating to competitive products and technological changes that may limit demand for CRENESSITY; risks associated with the company's dependence on third parties for development and manufacturing activities related to CRENESSITY, and the ability of the company to manage these third parties; risks that additional regulatory submissions for CRENESSITY may not occur or be submitted in a timely manner; risks that the FDA or other regulatory authorities may make adverse decisions regarding CRENESSITY; risks that post-approval CRENESSITY commitments or requirements may be delayed; risks that CRENESSITY may be precluded from commercialization by the proprietary or regulatory rights of third parties, or have unintended side effects, adverse reactions or incidents of misuse; risks and uncertainties relating to competitive products and technological changes that may limit demand for CRENESSITY; 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, 2024. Neurocrine Biosciences disclaims any obligation to update the statements contained in this press release after the date hereof other than required by law. © 2025 Neurocrine Biosciences, Inc. All Rights Reserved. CAP-CFT-US-0018 01/2025 SOURCE Neurocrine Biosciences, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

Narrative Review Assesses Current Treatment Challenges and the Evolving Classic Congenital Adrenal Hyperplasia (CAH) Therapeutic Landscape Non-Glucocorticoid (GC) Mechanisms for Treatment of CAH Could Enable Control of Excess ACTH and Androgens Without the Need for High-Dose GCs, Reducing Related Complications Over a Lifetime SAN DIEGO, Jan. 8, 2025 /PRNewswire/ -- Neurocrine Biosciences, Inc. (Nasdaq: NBIX) today announced publication of a narrative review discussing the challenges of traditional treatment of classic congenital adrenal hyperplasia (CAH) with glucocorticoids (GCs) alone and the potential benefits of introducing novel non-GC mechanisms for treating the condition that may enable lower, more physiologic GC dosing. The publication appears in Expert Review of Endocrinology & Metabolism. Treatment of classic CAH is a lifelong challenge that involves balancing the need to manage excess adrenocorticotropic hormone (ACTH) and androgens — historically achieved through high doses of GCs — while managing the risks associated with GC-related complications. The review, Glucocorticoid Therapy in Classic Congenital Adrenal Hyperplasia: Traditional and New Treatment Paradigms, provides information for healthcare providers as they navigate the evolving classic CAH therapeutic landscape. "The treatment paradigm for CAH involves continually monitoring and balancing ACTH and androgen levels and glucocorticoid-dosing to optimize treatment," said Irina Bancos, M.S., M.D., Professor of Medicine, Division of Endocrinology at the Mayo Clinic. "New CAH medications that control excess ACTH and adrenal androgens through a non-glucocorticoid mechanism allow for glucocorticoid dose reduction, with the cumulative reduction over time translating into a significant decrease in the risk for complications that can occur when higher doses are used over a patient's lifetime." "Chronic exposure to high-dose glucocorticoid treatment can result in severe cardiovascular, metabolic and skeletal complications, as well as negatively impact the mental health and quality of life of patients," said Eiry W. Roberts, M.D., Chief Medical Officer, Neurocrine Biosciences. "Over a lifetime, even modest reductions in daily glucocorticoid doses can reduce the risk of these complications and lessen the overall burden of glucocorticoid exposure." CAH presents a significant challenge for individuals living with the condition, their families and the healthcare providers who treat them. The condition leads to excess androgen production and has traditionally required high-dose GC treatment, both of which can have serious consequences. Until recently, treatment options have been limited, highlighting the unmet need for innovative new therapies for CAH. The FDA recently approved CRENESSITY™ (crinecerfont) as an adjunctive treatment to GC replacement to control androgens in adult and pediatric patients four years of age and older with classic CAH. CRENESSITY, a potent and selective oral corticotropin-releasing factor type 1 receptor (CRF1) antagonist, is the first and only classic CAH treatment that directly reduces excess ACTH and downstream adrenal androgen production, allowing for GC dose reduction. About Congenital Adrenal Hyperplasia Congenital adrenal hyperplasia (CAH) is a rare genetic condition that results in an enzyme deficiency that alters the production of adrenal steroid hormones, such as cortisol, aldosterone and adrenal androgens, which are essential for life. Approximately 95% of CAH cases are caused by variants of the CYP21A2 gene that leads to deficiency of the enzyme 21-hydroxylase (21-OH). Severe deficiency of this enzyme leads to an inability of the adrenal glands to produce enough cortisol and, in approximately 75% of cases, aldosterone. Because individuals with CAH are still able to produce androgens, the unused precursors that would normally be used to make cortisol instead result in the production of excess amounts of androgens. If left untreated, CAH can result in salt wasting, dehydration and even death. Historically, exogenous glucocorticoids (GCs) have been used not only to correct the endogenous cortisol deficiency, but doses used are higher than cortisol replacement needed (supraphysiologic) to lower the levels of adrenocorticotropic hormone (ACTH) and adrenal androgens. However, GC treatment at high 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 high-dose GCs may have psychological and cognitive impact, such as changes in mood and memory. Adrenal androgen excess has been associated with abnormal bone growth and development in pediatric patients, female health problems such as excess facial hair growth and menstrual irregularities, testicular rest tumors in males and fertility issues in both sexes. About CRENESSITY™ (crinecerfont) CRENESSITY™ is a potent and selective, oral corticotropin-releasing factor type 1 receptor (CRF1) antagonist developed to reduce and control excess adrenocorticotropic hormone (ACTH) and adrenal androgens through a non-glucocorticoid (GC) mechanism for the treatment of classic congenital adrenal hyperplasia (CAH). Antagonism of CRF1 receptors in the pituitary has been shown to decrease ACTH levels, which in turn decreases the production of adrenal androgens and potentially the symptoms associated with CAH. The robust clinical study data demonstrate that lowering adrenal androgen levels with CRENESSITY enables lower, more physiologic dosing of GCs to replace missing cortisol. CRENESSITY comes in capsules and an oral solution. The capsule formulation is available in 50 mg and 100 mg doses. The oral solution is available as a 50 mg/mL strength formulation. For adults 18 years and older, the recommended dosage is 100 mg twice daily taken orally with a meal. For pediatric patients four to 17 years of age weighing less than 55 kg (121 lbs), the recommended dosage is based on body weight and is administered twice daily, taken orally with a meal. For pediatric patients weighing more than 55 kg (121 lbs), the recommended dosage is 100 mg twice daily taken orally with a meal. Healthcare providers can work with patients to determine the appropriate formulation for use depending on patient needs. Patients receiving CRENESSITY should continue GC therapy for cortisol replacement. Important Information Approved Uses CRENESSITY (crinecerfont) is a prescription medicine used together with glucocorticoids (steroids) to control androgen (testosterone-like hormone) levels in adults and children 4 years of age and older with classic congenital adrenal hyperplasia (CAH). IMPORTANT SAFETY INFORMATION Do not take CRENESSITY if you: Are allergic to crinecerfont, or any of the ingredients in CRENESSITY. CRENESSITY may cause serious side effects, including: Allergic Reactions. Symptoms of an allergic reaction include tightness of the throat, trouble breathing or swallowing, swelling of the lips, tongue, or face, and rash. If you have an allergic reaction to CRENESSITY, get emergency medical help right away and stop taking CRENESSITY. Risk of Sudden Adrenal Insufficiency or Adrenal Crisis With Too Little Glucocorticoid (Steroid) Medicine. Sudden adrenal insufficiency or adrenal crisis can happen in people with congenital adrenal hyperplasia who are not taking enough glucocorticoid (steroid) medicine. You should continue taking your glucocorticoid (steroid) medicine during treatment with CRENESSITY. Certain conditions such as infection, severe injury, or shock may increase your risk for sudden adrenal insufficiency or adrenal crisis. Tell your healthcare provider if you get a severe injury, infection, illness, or have planned surgery during treatment. Your healthcare provider may need to change your dose of glucocorticoid (steroid) medicine. Before taking CRENESSITY, tell your healthcare provider about all of your medical conditions, including if you are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed. Tell your healthcare provider about all the medicines you take, including prescription and over-the- counter medicines, vitamins, and herbal supplements. The most common side effects of CRENESSITY in adults include tiredness, headache, dizziness, joint pain, back pain, decreased appetite, and muscle pain. The most common side effects of CRENESSITY in children include headache, stomach pain, tiredness, nasal congestion, and nose bleeds. These are not all the possible side effects of CRENESSITY. Call your healthcare provider for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit MedWatch at www.fda.gov/medwatch or call 1-800-FDA-1088. Dosage Forms and Strengths: CRENESSITY is available in 50 mg and 100 mg capsules and as an oral solution of 50 mg/mL. Please see full Prescribing Information 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. 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, classic congenital adrenal hyperplasia, 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, X (formerly Twitter) and Facebook. (*in collaboration with AbbVie) The NEUROCRINE BIOSCIENCES Logo Lockup and YOU DESERVE BRAVE SCIENCE are registered trademarks of Neurocrine Biosciences, Inc. CRENESSITY and CAHtalyst are trademarks of Neurocrine Biosciences, Inc. Forward-Looking Statements 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 CRENESSITY for the treatment of classic congenital adrenal hyperplasia (CAH); the value and benefits CRENESSITY brings to patients with CAH; the ability of Neurocrine Biosciences to ensure patients have access to CRENESSITY; and whether the results from our clinical trials of CRENESSITY are indicative of real-world results. Factors that could cause actual results to differ materially from those stated or implied in the forward-looking statements include, but are not limited to, the following: risks and uncertainties associated with Neurocrine Biosciences' business and finances in general, as well as risks and uncertainties associated with the commercialization of CRENESSITY; whether CRENESSITY receives adequate reimbursement from third-party payors; the degree and pace of market uptake of CRENESSITY; risks and uncertainties relating to competitive products and technological changes that may limit demand for CRENESSITY; risks associated with the Company's dependence on third parties for development and manufacturing activities related to CRENESSITY, and the ability of the Company to manage these third parties; risks that additional regulatory submissions for CRENESSITY or other product candidates may not occur or be submitted in a timely manner; risks that the FDA or other regulatory authorities may make adverse decisions regarding CRENESSITY; risks that post-approval CRENESSITY commitments or requirements may be delayed; risks that CRENESSITY may be precluded from commercialization by the proprietary or regulatory rights of third parties, or have unintended side effects, adverse reactions or incidents of misuse; risks and uncertainties relating to competitive products and technological changes that may limit demand for CRENESSITY; 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, 2024. Neurocrine Biosciences disclaims any obligation to update the statements contained in this press release after the date hereof other than required by law. © 2025 Neurocrine Biosciences, Inc. All Rights Reserved. CAP-CFT-US-0016 01/2025 View original content to download multimedia:https://www.prnewswire.com/news-releases/neurocrine-biosciences-announces-publication-on-traditional-glucocorticoid-treatment-in-classic-congenital-adrenal-hyperplasia-in-expert-review-of-endocrinology--metabolism-302345127.html SOURCE Neurocrine Biosciences, Inc. Neurocrine Biosciences, Inc., Media: Aimee White, 1-858-354-7865, media@neurocrine.com. Investors: Todd Tushla, 1-858-617-7143, ir@neurocrine.com