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Dianthus Therapeutics Highlights Recent Business Achievements and Reports Q2 Financial Results

1. Top-line Phase 2 results for DNTH103 expected in September 2025. 2. DNTH has $309.1 million cash, ensuring development funding until 2H'27. 3. Clinical trials in three neuromuscular conditions are ongoing or planned. 4. Market research shows neurologist demand for effective gMG therapies. 5. Phase 3 analysis for CIDP trial anticipated in 2H’26.

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$19.1508/07 04:09 PM EDTEvent Start
$18.7608/08 10:45 PM EDTLatest Updated
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Why Bullish?

The upcoming trial results and indications from market demand suggest positive future performance. Similar companies have seen stock uplifts around positive trial outcomes.

How important is it?

The upcoming results could significantly shift investor sentiment and stock valuation.

Why Short Term?

Top-line results due in September may influence stock prices swiftly. Investors typically react to clinical trial milestones.

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August 07, 2025 16:01 ET  | Source: Dianthus Therapeutics, Inc. Phase 2 MaGic trial of claseprubart (DNTH103) in generalized Myasthenia Gravis (gMG) top-line results anticipated in September 2025; the first of three catalysts for the claseprubart neuromuscular franchise by YE’26 Phase 3 CAPTIVATE trial of claseprubart in Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) ongoing; interim responder analysis anticipated in 2H’26 Phase 2 MoMeNtum trial of claseprubart in Multifocal Motor Neuropathy (MMN) ongoing; top-line results anticipated in 2H’26 $309.1 million of cash provides runway into 2H’27 NEW YORK and WALTHAM, Mass., Aug. 07, 2025 (GLOBE NEWSWIRE) -- Dianthus Therapeutics, Inc. (Nasdaq: DNTH), a clinical-stage biotechnology company dedicated to advancing the next generation of antibody complement therapeutics to treat severe autoimmune diseases, today reported financial results for the second quarter ending June 30, 2025, and provided an update on recent business achievements. “We look forward to reporting top-line Phase 2 results from our MaGic trial with claseprubart in gMG in September. We believe the multibillion-dollar gMG market has significant potential to expand, as only approximately 10% of AChR+ patients in the U.S. are currently on FcRn or complement therapies today,” said Marino Garcia, Chief Executive Officer of Dianthus Therapeutics. “Our recently completed quantitative market research with gMG treating neurologists in the U.S. clearly highlights their desire for new, improved therapies, specifically those with greater durability of symptom control, a differentiated safety profile by eliminating the boxed warning and REMS of C5 inhibitors, and a more convenient, patient-friendly delivery like an infrequent, self-administered autoinjector. We believe claseprubart has the potential to effectively address these unmet needs and help expand the use of biologics earlier in the treatment paradigm with patients that would otherwise delay the use of more burdensome biologics.” Claseprubart (DNTH103) Clinical Development Claseprubart is an investigational, clinical-stage, potent monoclonal antibody engineered to selectively target the classical pathway by inhibiting only the active form of the C1s protein, a clinically validated complement target. Claseprubart is designed to enable a more convenient, subcutaneous, self-administered injection dosed as infrequently as once every two weeks. Claseprubart has the potential to be a best-in-class pipeline-in-a-product across a range of autoimmune disorders with high unmet need. Generalized Myasthenia Gravis (gMG) Top-line Phase 2 MaGic gMG trial results anticipated in September: The MaGic trial is a global, randomized, double-blind, placebo-controlled Phase 2 trial in patients with gMG who are acetylcholine receptor (AChR) antibody positive. As previously announced in May, enrollment in this trial was completed with 65 patients, exceeding the target of 60. Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) Phase 3 CAPTIVATE CIDP trial ongoing: The CAPTIVATE trial is a single, global, two-part, randomized withdrawal Phase 3 trial in patients with CIDP, and it remains on track for an interim responder analysis in 2H’26. The Company believes this single pivotal trial will support a BLA filing in adult patients with CIDP. Multifocal Motor Neuropathy (MMN) Phase 2 MoMeNtum MMN trial ongoing: The MoMeNtum trial is a global, randomized, double-blind, placebo-controlled Phase 2 trial in patients with MMN, and it remains on track to report top-line results in 2H’26. Corporate Updates The International Nonproprietary Name (INN) has been finalized and DNTH103, a potentially best-in-class investigational classical pathway inhibitor, is now called claseprubart.On May 22, 2025, Simon Read, Ph.D., joined the Company’s Board of Directors. Dr. Read is a serial entrepreneur with more than 30 years of biopharmaceutical experience. He served as CEO and Founder of Mariana Oncology until its acquisition by Novartis in 2024 and CSO of Ra Pharma until its acquisition by UCB in 2020. Second-Quarter 2025 Financial Results Cash Position - $309.1 million of cash, cash equivalents and investments as of June 30, 2025 is projected to provide runway into the second half of 2027.R&D Expenses - Research and development (R&D) expenses for the quarter ended June 30, 2025 were $26.3 million, inclusive of $2.5 million of stock-based compensation, compared to $18.1 million for the quarter ended June 30, 2024, which included $1.4 million of stock-based compensation. This increase in R&D expenses was primarily driven by higher clinical costs, chemistry, manufacturing and controls (CMC) costs, and increased headcount to support claseprubart Phase 2 and Phase 3 development.G&A Expenses - General and administrative (G&A) expenses for the quarter ended June 30, 2025 totaled $8.9 million, inclusive of stock-based compensation of $3.2 million, compared to $6.0 million for the quarter ended June 30, 2024, which included $1.8 million of stock-based compensation. This increase in G&A expenses was primarily due to increased headcount.Net Loss - Net loss for the quarter ended June 30, 2025 was $31.6 million or $0.88 per share (basic and diluted) compared to $17.6 million or $0.51 per share (basic and diluted) for the quarter ended June 30, 2024.Additional Information - For additional information on the Company’s financial results for the quarter ended June 30, 2025, please refer to the Form 10-Q filed with the SEC. About ClaseprubartClaseprubart is an investigational, clinical-stage, potent monoclonal antibody engineered to selectively target the classical pathway by inhibiting only the active form of the C1s protein, a clinically validated complement target. Claseprubart is enhanced with YTE half-life extension technology designed to enable a more convenient subcutaneous, self-administered injection dosed as infrequently as once every two weeks. Additionally, selective inhibition of the classical complement pathway may lower patient risk of infection from encapsulated bacteria by preserving immune activity of the lectin and alternative pathways. As the classical pathway plays a significant role in disease pathology, claseprubart has the potential to be a best-in-class pipeline-in-a-product across a range of autoimmune disorders with high unmet need. Dianthus is building a neuromuscular franchise with claseprubart and anticipates reporting top-line data from the Phase 2 MaGic trial in generalized Myasthenia Gravis in September 2025, the interim responder analysis of the Phase 3 CAPTIVATE trial in Chronic Inflammatory Demyelinating Polyneuropathy in 2H’26, and top-line data from the Phase 2 MoMeNtum trial in Multifocal Motor Neuropathy in 2H’26. Claseprubart is an investigational agent that is not approved as a therapy in any indication in any jurisdiction worldwide. About Dianthus TherapeuticsDianthus Therapeutics is a clinical-stage biotechnology company dedicated to designing and delivering novel, best-in-class monoclonal antibodies with improved selectivity and potency. Based in New York City and Waltham, Mass., Dianthus is comprised of an experienced team of biotech and pharma executives who are leading the development of next-generation antibody complement therapeutics, aiming to deliver transformative medicines for people living with severe autoimmune and inflammatory diseases. To learn more, please visit www.dianthustx.com and follow us on LinkedIn.  Cautionary Statement Regarding Forward-Looking Statements Certain statements in this press release, other than purely historical information, may constitute “forward-looking statements” within the meaning of the federal securities laws, including for purposes of the safe harbor provisions under the United States Private Securities Litigation Reform Act of 1995, express or implied statements regarding future plans and prospects, including statements regarding the expectations or plans for discovery, preclinical studies, clinical trials and research and development programs, in particular with respect to claseprubart, and any developments or results in connection therewith, including the target product profile and administration of claseprubart; the anticipated timing of the initiation and results from those studies and trials; expectations regarding the time period over which the Company’s capital resources are expected to be sufficient to fund its anticipated operations; and expectations regarding the market and potential opportunities for complement therapies, in particular with respect to claseprubart. Claseprubart is an investigational agent that is not approved as a therapy in any indication in any jurisdiction worldwide. The words “opportunity,” “potential,” “milestones,” “runway,” “will,” “anticipate,” “achieve,” “near-term,” “catalysts,” “pursue,” “pipeline,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “possible,” “predict,” “project,” “should,” “strive,” “would,” “aim,” “target,” “commit,” and similar expressions (including the negatives of these terms or variations of them) generally identify forward-looking statements, but the absence of these words does not mean that statement is not forward looking. Actual results could differ materially from those included in the forward-looking statements due to various factors, risks and uncertainties, including, but not limited to, that preclinical testing of claseprubart and data from clinical trials may not be predictive of the results or success of ongoing or later clinical trials, that the development of claseprubart or the Company's other compounds may take longer and/or cost more than planned, that the Company may be unable to successfully complete the clinical development of the Company’s compounds, that the Company may be delayed in initiating, enrolling or completing its planned clinical trials, and that the Company's compounds may not receive regulatory approval or become commercially successful products. These and other risks and uncertainties are identified under the heading "Risk Factors" included in the Company’s Annual Report on Form 10-K for the period ended December 31, 2024, and other filings that the Company has made and may make with the SEC in the future. Nothing in this press release should be regarded as a representation by any person that the forward-looking statements set forth herein will be achieved or that any of the contemplated results of such forward-looking statements will be achieved. The forward-looking statements in this press release speak only as of the date they are made and are qualified in their entirety by reference to the cautionary statements herein. Dianthus undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. Contact Jennifer Davis RuffDianthus Therapeuticsjdavisruff@dianthustx.com DIANTHUS THERAPEUTICS, INC. Condensed Consolidated Balance Sheets (in thousands, except share and per share data) (unaudited)  June 30,2025  December 31,2024 Assets     Current assets:     Cash and cash equivalents$13,237  $22,792 Short-term investments 244,152   252,449 Receivable from former related party —   807 Accounts receivable, net 39   — Prepaid expenses and other current assets 6,177   4,856 Total current assets 263,605   280,904 Long-term investments 51,705   81,728 Property and equipment, net 207   194 Right-of-use operating lease assets 1,378   1,553 Other assets and restricted cash 9,181   9,629 Total assets$326,076  $374,008 Liabilities and Stockholders’ Equity     Current liabilities:     Accounts payable$5,404  $4,579 Accrued expenses 13,999   13,074 Current portion of deferred revenue 479   479 Current portion of operating lease liabilities 211   320 Total current liabilities 20,093   18,452 Deferred revenue 1,785   1,908 Long-term operating lease liabilities 1,119   1,171 Total liabilities 22,997   21,531 Commitments and contingencies     Stockholders’ equity:     Preferred stock —   — Common stock 32   31 Additional paid-in capital 538,481   526,732 Accumulated deficit (235,532)  (174,392)Accumulated other comprehensive income 98   106 Total stockholders’ equity 303,079   352,477 Total liabilities and stockholders’ equity$326,076  $374,008  DIANTHUS THERAPEUTICS, INC. Condensed Consolidated Statements of Operations and Comprehensive Loss (in thousands, except share and per share data) (unaudited)  Three Months Ended June 30,  Six Months Ended June 30,  2025  2024  2025  2024 Revenues:           License revenue – former related party$—  $1,863  $—  $2,737 License revenue 193   —   1,356   — Total revenues 193   1,863   1,356   2,737 Operating expenses:           Research and development 26,251   18,070   53,254   31,148 General and administrative 8,869   5,997   16,206   11,637 Total operating expenses 35,120   24,067   69,460   42,785 Loss from operations (34,927)  (22,204)  (68,104)  (40,048)Other income/(expense):           Interest and investment income 3,403   4,708   7,194   8,930 Gain on investment in former related party 32   —   27   — Loss on currency exchange, net (30)  (31)  (52)  (43)Other expense (107)  (80)  (205)  (194)Total other income 3,298   4,597   6,964   8,693 Net loss$(31,629) $(17,607) $(61,140) $(31,355)Net loss per share attributable to common stockholders, basic and diluted$(0.88) $(0.51) $(1.71) $(0.99)Weighted-average number of shares of common stockoutstanding including shares issuable under equityclassified pre-funded warrants, used in computing net loss per share of common stock, basic and diluted 35,822,308   34,227,038   35,806,591   31,794,881 Comprehensive loss:           Net loss$(31,629) $(17,607) $(61,140) $(31,355)Other comprehensive loss:           Unrealized loss on marketable securities (172)  (10)  (8)  (84)Total other comprehensive loss (172)  (10)  (8)  (84)Total comprehensive loss$(31,801) $(17,617) $(61,148) $(31,439)

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