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Sermorelin
Clinical data
Trade namesGeref, Gerel
Other namesGRF 1โ€“29
AHFS/Drugs.comMicromedex Detailed Consumer Information
Routes of
administration		Injection
ATC code
Legal status
Legal status
  • US: Discontinued[1]
Identifiers
  • L-Tyrosyl-L-alanyl-L-ฮฑ-aspartyl-L-alanyl-L-isoleucyl-L-phenylalanyl-L-threonyl-L-asparaginyl-L-seryl-L-tyrosyl-L-arginyl-L-lysyl-L-valyl-L-leucylglycyl-L-glutaminyl-L-leucyl-L-seryl-L-alanyl-L-arginyl-L-lysyl-L-leucyl-L-leucyl-L-glutaminyl-L-ฮฑ-aspartyl-L-isoleucyl-L-methionyl-L-seryl-L-argininamide
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC149H246N44O42S
Molar mass3357.93ย gยทmolโˆ’1
3D model (JSmol)
  • CC[C@H](C)[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(=O)N)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC2=CC=C(C=C2)O)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC(C)C)C(=O)NCC(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N)NC(=O)[C@H](C)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](C)NC(=O)[C@H](CC3=CC=C(C=C3)O)N
  • InChI=1S/C149H246N44O42S/c1-20-77(13)116(191-122(211)81(17)168-132(221)104(66-113(204)205)178-121(210)79(15)167-123(212)88(152)62-84-39-43-86(198)44-40-84)145(234)185-102(63-83-32-23-22-24-33-83)138(227)193-118(82(18)197)146(235)186-103(65-111(155)202)137(226)189-108(71-196)142(231)182-101(64-85-41-45-87(199)46-42-85)136(225)175-93(38-31-56-165-149(161)162)126(215)174-91(35-26-28-53-151)131(220)190-115(76(11)12)143(232)184-97(58-72(3)4)124(213)166-68-112(203)170-94(47-49-109(153)200)128(217)180-100(61-75(9)10)135(224)188-106(69-194)140(229)169-80(16)120(209)172-92(37-30-55-164-148(159)160)125(214)173-90(34-25-27-52-150)127(216)179-99(60-74(7)8)134(223)181-98(59-73(5)6)133(222)176-95(48-50-110(154)201)129(218)183-105(67-114(206)207)139(228)192-117(78(14)21-2)144(233)177-96(51-57-236-19)130(219)187-107(70-195)141(230)171-89(119(156)208)36-29-54-163-147(157)158/h22-24,32-33,39-46,72-82,88-108,115-118,194-199H,20-21,25-31,34-38,47-71,150-152H2,1-19H3,(H2,153,200)(H2,154,201)(H2,155,202)(H2,156,208)(H,166,213)(H,167,212)(H,168,221)(H,169,229)(H,170,203)(H,171,230)(H,172,209)(H,173,214)(H,174,215)(H,175,225)(H,176,222)(H,177,233)(H,178,210)(H,179,216)(H,180,217)(H,181,223)(H,182,231)(H,183,218)(H,184,232)(H,185,234)(H,186,235)(H,187,219)(H,188,224)(H,189,226)(H,190,220)(H,191,211)(H,192,228)(H,193,227)(H,204,205)(H,206,207)(H4,157,158,163)(H4,159,160,164)(H4,161,162,165)/t77-,78-,79-,80-,81-,82+,88-,89-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,115-,116-,117-,118-/m0/s1ย โ˜’N
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Sermorelin acetate (INNTooltip International Nonproprietary Name; brand names Geref, Gerel), also known as GHRH (1-29), is a peptide analogue of growth hormone-releasing hormone (GHRH) which is used as a diagnostic agent to assess growth hormone (GH) secretion for the purpose of diagnosing growth hormone deficiency.[2][3][4] It is a 29-amino acid polypeptide representing the 1โ€“29 fragment from endogenous human GHRH, thought to be the shortest fully functional fragment of GHRH.[2]

Sermorelin was approved by the US Food and Drug Administration (FDA) in 1997 for use as a treatment for children with growth hormone deficiency or growth failure.[5] However, as of 2008, the manufacturer discontinued the production of Sermorelin for commercial reasons, and it is no longer available as an FDA-approved drug.[1][6] Despite this, it may still be used in some off-label contexts or obtained through compounding pharmacies.[7]

Medical usage

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Sermorelin was used to treat children with growth hormone deficiency or growth failure by stimulating the pituitary gland to release growth hormone (GH), thereby increasing plasma GH levels.[2]

Mechanism of action

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Sermorelin binds to the growth hormone-releasing hormone receptor (GHRHR), mimicking the effects of the full-length GHRH in promoting growth hormone secretion.[8]

Sermorelin's effects are regulated by negative feedback through the inhibitory hormone somatostatin, making it difficult to overdose, unlike exogenous rhGH (a synthetic version of human GH). This interaction with somatostatin prompts the pituitary to release hGH in bursts, which mirrors natural hormone rhythms rather than the constant levels produced by rhGH injections. As a result, sermorelin avoids tachyphylaxis by promoting a more physiological pattern of hGH release. Additionally, sermorelin stimulates the pituitary to enhance hGH gene transcription, thereby maintaining the growth hormone neuroendocrine system axis, which is the first to deteriorate with age. By supporting pituitary function, sermorelin helps slow the decline of pituitary hormones during aging, thereby preserving both youthful anatomy and physiology.[3]

Research potential

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GHRH naturally declines with age. No conclusive results are known whether sermorelin could yield potential benefits for adults, such as to enhance pituitary function or mimic growth hormone secretion patterns. Orally active growth hormone-releasing peptides may be under development. Sermorelin may be an alternative to rhGH for growth hormone replacement therapy (GHRT) in aging adults.

Sermorelin can be prescribed for off-label use without the legal restrictions that apply to rhGH. [3]

See also

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References

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  1. ^ a b "Geref (Sermorelin acetate)". fda.gov. US Food and Drug Administration. NDA 020443. Archived from the original on February 19, 2017.
  2. ^ a b c Prakash A, Goa KL (August 1999). "Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency". BioDrugs. 12 (2): 139โ€“157. doi:10.2165/00063030-199912020-00007. PMIDย 18031173. S2CIDย 195690081.
  3. ^ a b c Walker RF (2006). "Sermorelin: a better approach to management of adult-onset growth hormone insufficiency?". Clinical Interventions in Aging. 1 (4): 307โ€“308. doi:10.2147/ciia.2006.1.4.307. PMCย 2699646. PMIDย 18046908.
  4. ^ Rang HP, Dale MM, Ritter JM, Moore PK (2003). Pharmacology (5thย ed.). Edinburgh: Churchill Livingstone. ISBNย 0-443-07145-4.
  5. ^ Xu Z (January 2016). "Growth hormone-releasing hormone.". Handbook of Hormones. Academic Press. pp.ย 144โ€“145, e18B-2-e18B-4. doi:10.1016/B978-0-12-801028-0.00143-4. ISBNย 978-0-12-801028-0.
  6. ^ "Determination That GEREF (Sermorelin Acetate) Injection, 0.5 Milligrams Base/Vial and 1.0 Milligrams Base/Vial, and GEREF (Sermorelin Acetate) Injection, 0.05 Milligrams Base/Amp, Were Not Withdrawn From Sale for Reasons of Safety or Effectiveness". Federal Register. US Food and Drug Administration. 4 March 2013. Docket No. FDA-2012-P-1071.
  7. ^ Walker RF (March 2002). "Assessing safety and efficacy of growth hormone replacement in aging by community physicians". Journal of Anti-Aging Medicine. 5 (1): 41โ€“55. doi:10.1089/10945450231762928 (inactive 12 July 2025).{{cite journal}}: CS1 maint: DOI inactive as of July 2025 (link)
  8. ^ Ishida J, Saitoh M, Ebner N, etย al. (January 2020). "Growth hormone secretagogues: history, mechanism of action, and clinical development". JCSM Rapid Communications. 3 (1): 25โ€“37. doi:10.1002/rco2.9.
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๐Ÿ“š Artikel Terkait di Wikipedia

Growth hormone secretagogue

such as growth hormone-releasing hormone (GHRH, somatorelin), CJC-1295, sermorelin, and tesamorelin. Many of them also induce the secretion of insulin-like

CJC-1295

CJC-1295 is Nษ›30-maleimidopropionyl-[D-Ala2, Gln8, Ala15, Leu27]-Sermorelin-Lys30. Sermorelin: H-Tyr-Ala2-Asp-Ala-Ile-Phe-Thr-Asn8-Ser-Tyr-Arg-Lys-Val-Leu

Modified GRF (1-29)

(abbreviated as GRF (1-29)), and also known by its standardized name, sermorelin. The first 29 amino acids of GHRH were discovered to be as equally potent

Growth hormoneโ€“releasing hormone

primarily research chemicals, although some have specific applications. Sermorelin, a functional peptide fragment of GHRH, has been used in the diagnosis

List of banned substances in Major League Baseball

fragment 176-191) and releasing factors including GHRHs (e.g., CJC-1295, sermorelin, tesamorelin), GHSs (e.g., ghrelin and its mimetics (e.g., anamorelin

Growth hormone

Peptide: ALRN-5281 CJC-1295 Dumorelin GHRH Modified GRF (1-29) Rismorelin Sermorelin Somatorelin Tesamorelin Antagonists: MZ-5-156 GHS (ghrelin) Agonists:

Ibutamoren

Peptide: ALRN-5281 CJC-1295 Dumorelin GHRH Modified GRF (1-29) Rismorelin Sermorelin Somatorelin Tesamorelin Antagonists: MZ-5-156 GHS (ghrelin) Agonists:

Ipamorelin

Peptide: ALRN-5281 CJC-1295 Dumorelin GHRH Modified GRF (1-29) Rismorelin Sermorelin Somatorelin Tesamorelin Antagonists: MZ-5-156 GHS (ghrelin) Agonists: