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  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ecd="http://xbrl.sec.gov/ecd/2025"
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        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002012593</identifier>
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        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <dei:DocumentType contextRef="P01_01_2025To12_31_2025" id="hidden163022136">DEF 14A</dei:DocumentType>
    <dei:AmendmentFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4670">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="P01_01_2025To12_31_2025" id="ixv-4671">0002012593</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="P01_01_2025To12_31_2025" id="ixv-4681">RAPPORT THERAPEUTICS, INC.</dei:EntityRegistrantName>
    <ecd:InsiderTrdPoliciesProcAdoptedFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4685">true</ecd:InsiderTrdPoliciesProcAdoptedFlag>
    <ecd:NonRule10b51ArrAdoptedFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4686">true</ecd:NonRule10b51ArrAdoptedFlag>
    <ecd:Rule10b51ArrAdoptedFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4687">true</ecd:Rule10b51ArrAdoptedFlag>
    <ecd:AwardTmgMnpiDiscTextBlock contextRef="P01_01_2025To12_31_2025" id="ixv-2277">&lt;div style="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold"&gt;&lt;div style="font-style:italic;display:inline;"&gt;Policy Regarding Timing of Awards of Options and Other Option-Like Instruments &lt;/div&gt;&lt;/div&gt;&lt;div style="margin-top:6pt; margin-bottom:0pt; text-indent:4%; font-size:10pt; font-family:Times New Roman"&gt;Our compensation committee generally grants annual equity awards, including stock option grants to our named executive officers, in the first quarter of each fiscal year. In addition, new hires receive stock option grants at the time of their hiring. During 2025, our compensation committee did not take into account any material nonpublic information when determining the timing and terms of equity incentive awards, and we did not time the disclosure of material nonpublic information for the purpose of affecting the value of executive compensation. During 2025, we did not grant stock options to our named executive officers during any period beginning four business days before and ending one business day after the filing or furnishing of a Form &lt;div style="white-space:nowrap;display:inline;"&gt;10-Q,&lt;/div&gt; &lt;div style="white-space:nowrap;display:inline;"&gt;10-K&lt;/div&gt; or &lt;div style="white-space:nowrap;display:inline;"&gt;8-K&lt;/div&gt; that discloses material nonpublic information. &lt;/div&gt;</ecd:AwardTmgMnpiDiscTextBlock>
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    <ecd:AwardTmgPredtrmndFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4692">false</ecd:AwardTmgPredtrmndFlag>
    <ecd:MnpiDiscTimedForCompValFlag contextRef="P01_01_2025To12_31_2025" id="ixv-4693">false</ecd:MnpiDiscTimedForCompValFlag>
    <ecd:AwardTmgMethodTextBlock contextRef="P01_01_2025To12_31_2025" id="ixv-2281">During 2025, we did not grant stock options to our named executive officers during any period beginning four business days before and ending one business day after the filing or furnishing of a Form &lt;div style="white-space:nowrap;display:inline;"&gt;10-Q,&lt;/div&gt; &lt;div style="white-space:nowrap;display:inline;"&gt;10-K&lt;/div&gt; or &lt;div style="white-space:nowrap;display:inline;"&gt;8-K&lt;/div&gt; that discloses material nonpublic information.</ecd:AwardTmgMethodTextBlock>
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